turkey-yks

2017 lys1-math

44 maths questions

Q4 Permutations & Arrangements Factorial and Combinatorial Expression Simplification View
$\frac { 6 ! + 7 ! } { ( 4 ! ) ^ { 2 } }$\ What is the result of this operation?\ A) 10\ B) 12\ C) 15\ D) 18\ E) 20
The numbers $\frac { x } { y }$, $x - y$, and $x$ are three consecutive even integers arranged from smallest to largest.\ Accordingly, what is the sum $\mathrm{x} + \mathrm{y}$?\ A) 8\ B) 10\ C) 12\ D) 14\ E) 16
Q7 Number Theory GCD, LCM, and Coprimality View
Let $a$ and $b$ be distinct positive integers such that LCM(a,b) equals a prime number.
Accordingly,\ I. $a$ and $b$ are coprime numbers.\ II. The sum $a + b$ is an odd number.\ III. The product $\mathrm{a} \cdot \mathrm{b}$ is an odd number.
Which of the following statements are always true?\ A) Only I\ B) Only II\ C) Only III\ D) I and II\ E) II and III
Q8 Polynomial Division & Manipulation View
$\frac { x z - y z + x y - y ^ { 2 } } { x ^ { 2 } - x y + x z - y z }$\ Which of the following is the simplified form of this expression?\ A) $\frac { z - y } { x - z }$\ B) $\frac { y + z } { x + z }$\ C) $\frac { x + z } { y + z }$\ D) $\frac { x } { x + y }$\ E) $\frac { y - z } { x + y }$
For positive real numbers $\mathrm{a}$, $\mathrm{b}$, and $c$ $$\begin{aligned}& \frac { a + c } { b + 2 } = \frac { c } { b } \\& \frac { a } { b } = c\end{aligned}$$ the following equalities are given.\ Accordingly, what is b?\ A) $\sqrt { 2 }$\ B) $\sqrt { 3 }$\ C) $\sqrt { 6 }$\ D) 2\ E) 3
Q10 Indices and Surds Solving Equations Involving Surds View
$\frac { 1 } { \sqrt { \mathrm{a} } } - \frac { 2 } { \sqrt { 9 \mathrm{a} } } = 1$\ Given this, what is a?\ A) $\frac { 1 } { 3 }$\ B) $\frac { 2 } { 3 }$\ C) $\frac { 1 } { 4 }$\ D) $\frac { 1 } { 9 }$\ E) $\frac { 4 } { 9 }$
For nonzero real numbers $x$, $y$, and $z$ whose absolute values are distinct from each other, $$\begin{aligned}| x + y | & = | x | - | y | \\| y + z | & = | y | + | z |\end{aligned}$$ the following equalities are satisfied.
Given that $x > 0$,\ I. $\frac { x } { x + y } < 1$\ II. $\frac { y } { y + z } < 1$\ III. $\frac { z } { x + z } < 1$\ Which of the following statements are always true?\ A) Only I\ B) Only II\ C) Only III\ D) I and III\ E) II and III
Three-digit natural numbers $ADB$, $ADC$, $DAA$, $DAD$ $$\begin{aligned}& \mathrm{ADB} < \mathrm{DAA} \\& \mathrm{DAD} < \mathrm{ADC}\end{aligned}$$ satisfy the inequalities.\ Accordingly, which of the following orderings is correct?\ A) A $=$ D $<$ B $<$ C\ B) C $<$ A $=$ B $<$ D\ C) D $<$ A $=$ B $<$ C\ D) B $<$ A $=$ D $<$ C\ E) C $<$ A $=$ D $<$ B
For nonzero real numbers $x$ and $y$, given that $y < x$ and $x ^ { 2 } < y ^ { 2 }$,\ I. $x \cdot y > 0$\ II. $x + y < 0$\ III. $\frac { 1 } { x } - \frac { 1 } { y } > 0$\ Which of the following statements are always true?\ A) Only I\ B) Only II\ C) I and II\ D) I and III\ E) II and III
Q14 Combinations & Selection Subset Counting with Set-Theoretic Conditions View
Let A be a subset of the set $\{ 1,2,3,4,5,6,7 \}$. $$A \cap \{ 5,6,7 \}$$ The elements of the set are odd numbers.\ Accordingly, how many three-element sets A satisfy this condition?\ A) 12\ B) 14\ C) 16\ D) 18\ E) 20
Q15 Composite & Inverse Functions Evaluate Composition from Algebraic Definitions View
Sets $A$, $B$, and $C$ are defined as $$\begin{aligned}& A = \{ ( x , x ) : x \in \mathbb { R } \} \\& B = \{ ( x , 3 - x ) : x \in \mathbb { R } \} \\& C = \{ ( x , x + 4 ) : x \in \mathbb { R } \}\end{aligned}$$ Given that $( p , q ) \in A \cap B$ and $( r , s ) \in B \cap C$, $$\frac { p - r } { q + s }$$ what is the value of this expression?\ A) $\frac { 1 } { 3 }$\ B) $\frac { 1 } { 4 }$\ C) $\frac { 3 } { 4 }$\ D) $\frac { 4 } { 5 }$\ E) $\frac { 2 } { 5 }$
Q16 Solving quadratics and applications Evaluate Composition from Algebraic Definitions View
Functions $f$ and $g$ are defined on the set of real numbers as $$\begin{aligned}& f ( x ) = \frac { x \cdot ( x - 2 ) } { 2 } \\& g ( x ) = \frac { x \cdot ( x - 1 ) \cdot ( x - 2 ) } { 3 }\end{aligned}$$ The sum of the $\mathbf{x}$ values satisfying the equality $$f ( 2 x ) = g ( x + 1 )$$ is what?\ A) 1\ B) 3\ C) 4\ D) 6\ E) 8
Q17 Composite & Inverse Functions Evaluating an algebraic expression given a constraint View
A function $f$ on the set of real numbers is defined for every real number $x$ where $n$ is an integer as $$f ( x ) = x - n , \quad x \in [ n , n + 1 )$$ Accordingly, $$f ( 1 ) + f \left( \frac { 7 } { 3 } \right) + f \left( \frac { 13 } { 6 } \right)$$ what is this sum?\ A) $\frac { 1 } { 2 }$\ B) $\frac { 2 } { 3 }$\ C) $\frac { 7 } { 6 }$\ D) 1\ E) 2
A function $f$ on the set of real numbers is defined as $$f ( x ) = \frac { | x | } { 1 + | x | }$$ Accordingly, which of the following is the image set of the interval $[ - 2,1 )$ under the function $\mathbf{f}$?\ A) $[ 0,1 ]$\ B) $\left( \frac { 1 } { 3 } , \frac { 2 } { 3 } \right]$\ C) $\left[ \frac { 1 } { 3 } , \frac { 2 } { 3 } \right)$\ D) $\left[ 0 , \frac { 1 } { 3 } \right]$\ E) $\left[ 0 , \frac { 2 } { 3 } \right]$
Q22 Discriminant and conditions for roots Determine coefficients or parameters from root conditions View
The sum of the roots of the equation $x ^ { 2 } - a x + 1 = 0$, which has two real roots, is a root of the equation $$x ^ { 2 } + 6 x + a = 0$$ Accordingly, what is a?\ A) - 3\ B) - 4\ C) - 5\ D) - 6\ E) - 7
Q23 Complex Numbers Arithmetic Powers of i or Complex Number Integer Powers View
$\frac { \left( 1 - i ^ { 2 } \right) \cdot \left( 1 - i ^ { 6 } \right) \cdot \left( 1 - i ^ { 10 } \right) } { ( 1 - i ) \cdot \left( 1 - i ^ { 3 } \right) \cdot \left( 1 - i ^ { 5 } \right) }$\ What is the result of this operation?\ A) 1\ B) 2\ C) $2 + 2 i$\ D) $2 + 2 i$\ E) $1 + 2 i$
Q24 Complex Numbers Arithmetic Solving Equations for Unknown Complex Numbers View
$4 z - 3 \bar { z } = \frac { 1 - 18 i } { 2 - i }$\ Which of the following is the complex number $z$ that satisfies this equality?\ A) $- 2 + i$\ B) $- 3 + i$\ C) $4 + 2 i$\ D) $3 - 2 i$\ E) $4 - i$
$( x - 1 ) ^ { 2 } < | x - 1 | + 6$\ What is the sum of the integers $x$ that satisfy this inequality?\ A) 2\ B) 3\ C) 4\ D) 5\ E) 6
$\frac { 6 x + 1 } { ( x + 1 ) ^ { 2 } } > 1$\ Which of the following is the set of all real numbers that satisfy this inequality?\ A) $( - 1,4 )$\ B) $( - 1,6 )$\ C) $( 0,4 )$\ D) $( 0 , \infty )$\ E) $( 2 , \infty )$
Q27 Polynomial Division & Manipulation Polynomial Construction from Root/Value Conditions View
A third-degree polynomial $P ( x )$ with real coefficients has roots $- 3$, $- 1$, and $2$.\ Given that $P ( 0 ) = 12$, what is the coefficient of the $x ^ { 2 }$ term?\ A) - 4\ B) - 3\ C) - 2\ D) 1\ E) 2
Q28 Polynomial Division & Manipulation Divisibility and Factor Determination View
Let $a$ and $b$ be integers such that $$\begin{aligned}& P ( x ) = x ^ { 3 } - a x ^ { 2 } - ( b + 2 ) x + 4 b \\& Q ( x ) = x ^ { 2 } - 2 a x + b\end{aligned}$$ For the polynomials
  • $\mathrm{P} ( - 4 ) = 0$
  • $\mathrm{Q} ( - 4 ) \neq 0$
it is known that.\ If the roots of polynomial $\mathbf{Q} ( \mathbf{x} )$ are also roots of polynomial $\mathbf{P} ( \mathbf{x} )$, what is the difference $b - a$?\ A) 8\ B) 9\ C) 11\ D) 13\ E) 14
Q29 Polynomial Division & Manipulation Divisibility and Factor Determination View
How many second-degree polynomials have coefficients from the set $\{ 0,1,2 , \ldots , 9 \}$ and have one root equal to $\frac { - 2 } { 3 }$?\ A) 5\ B) 7\ C) 8\ D) 10\ E) 11
$x ^ { \ln 4 } - 6 \cdot 2 ^ { \ln x } + 8 = 0$\ What is the product of the $x$ values that satisfy this equation?\ A) $e ^ { 6 }$\ B) $e ^ { 4 }$\ C) $e ^ { 3 }$\ D) $\frac { e ^ { 2 } } { 2 }$\ E) $\frac { e ^ { 3 } } { 3 }$
$\frac { \log _ { 3 } \sqrt { 27 } + \log _ { 27 } \sqrt { 3 } } { \log _ { 3 } \sqrt { 27 } - \log _ { 27 } \sqrt { 3 } }$\ What is the result of this operation?\ A) $\frac { 3 } { 2 }$\ B) $\frac { 4 } { 3 }$\ C) $\frac { 5 } { 4 }$\ D) $\frac { 6 } { 5 }$\ E) $\frac { 7 } { 6 }$
Q34 Laws of Logarithms Solve a Logarithmic Equation View
$\ln x + \ln y = 9$ $$\ln x - \ln y = 3$$ Given this, what is the value of $\log _ { y } x$?\ A) 1\ B) 2\ C) 3\ D) 4\ E) 5
Q35 Arithmetic Sequences and Series Find Specific Term from Given Conditions View
Let $\left( a _ { n } \right)$ be an arithmetic sequence such that $$\begin{aligned}& a _ { 10 } + a _ { 7 } = 6 \\& a _ { 9 } - a _ { 6 } = 1\end{aligned}$$ the following equalities are given.\ Accordingly, what is $a _ { 1 }$?\ A) $\frac { 7 } { 3 }$\ B) $\frac { 5 } { 2 }$\ C) $\frac { 4 } { 3 }$\ D) $\frac { 5 } { 6 }$\ E) $\frac { 1 } { 2 }$
$\lim _ { x \rightarrow \pi } \frac { x ^ { 2 } \cdot \sin ( \pi - x ) + \pi ^ { 2 } \cdot \sin ( x - \pi ) } { ( x - \pi ) ^ { 2 } }$\ What is the value of this limit?\ A) $- 2 \pi$\ B) $- \pi$\ C) $\pi$\ D) $2 \pi$\ E) $3 \pi$
Q41 Applied differentiation Geometric or applied optimisation problem View
A crystal in the shape of a cube with one edge of length $x$ units has a production cost of 5 TL per unit cube based on volume, and a selling price of 20 TL per unit square based on surface area.
Accordingly, for what value of x in units will the profit from selling this crystal be maximum?\ A) 16\ B) 18\ C) 20\ D) 22\ E) 24
Q42 Tangents, normals and gradients Determine unknown parameters from tangent conditions View
Let a and b be real numbers, and $$f ( x ) = a \cdot \ln x + b \cdot x ^ { 2 } + 3$$ The equation of the tangent line drawn to the graph of the function at the point $(1, f(1))$ is given as $y - 2x + 1 = 0$.
Accordingly, what is the product $\mathbf{a} \cdot \mathbf{b}$?\ A) $- 18$\ B) $- 16$\ C) $- 12$\ D) $- 8$\ E) $- 6$
Q43 Differential equations Asymptote Determination View
Let a be a real number, and $$f ( x ) = \ln ( 2 x + 8 )$$ The vertical asymptote of the function $$g ( x ) = \frac { \sin x } { x ^ { 2 } + a x }$$ is also a vertical asymptote of the function.\ Accordingly, what is a?\ A) 0\ B) 1\ C) 2\ D) 3\ E) 4
Q44 Indefinite & Definite Integrals Definite Integral Evaluation (Computational) View
$\int_{\pi/6}^{?} 2 \tan ( 2 x ) \, d x$\ What is the value of the integral?\ A) $\ln 2$\ B) $\ln 3$\ C) $\ln 4$\ D) $\ln 5$\ E) $\ln 6$
$\int \sqrt { 1 + e^{x^{2}} } \, d x$\ In the integral, if the substitution $u = \sqrt { 1 + e ^ { x } }$ is made, which of the following integrals is obtained?\ A) $\int \frac { 2 u } { u ^ { 2 } + 1 } d u$\ B) $\int \frac { u ^ { 2 } } { u ^ { 2 } + 1 } d u$\ C) $\int \frac { 1 } { u ^ { 2 } - 1 } d u$\ D) $\int \frac { u } { u ^ { 2 } - 1 } d u$\ E) $\int \frac { 2 u ^ { 2 } } { u ^ { 2 } - 1 } d u$
Q46 Integration by Parts Definite Integral Evaluation by Parts View
$\int _ { 1/2 } ^ { e } x \ln ( 2 x ) \, d x$\ What is the value of the integral?\ A) $\frac { e ^ { 2 } } { 2 }$\ B) $\frac { e ^ { 2 } - 1 } { 4 }$\ C) $\frac { e ^ { 2 } + 1 } { 16 }$\ D) 1\ E) 2
Q47 Integration with Partial Fractions View
$\int _ { 4 } ^ { 5 } \frac { x + 1 } { x ^ { 2 } - 5 x + 6 } d x$\ What is the value of the integral?\ A) $5 \ln 3 - \ln 2$\ B) $5 \ln 2 - 2 \ln 3$\ C) $3 \ln 2 + 2 \ln 3$\ D) $2 \ln 2 + 3 \ln 3$\ E) $7 \ln 2 - 3 \ln 3$
Q48 Areas by integration View
The function $f ( x ) = x ^ { 2 }$ is defined on the set of real numbers. For real numbers in the interval $[-3, 3]$, the graph of $y = f(x)$ is given in the coordinate plane divided into unit squares as shown in the figure.
In the unit squares divided by this graph; the regions below the graph are colored blue, and the regions above are colored yellow as shown in the figure.
Accordingly, what is the ratio of the sum of the areas of the blue regions to the sum of the areas of the yellow regions?\ A) $\frac { 2 } { 3 }$\ B) $\frac { 3 } { 4 }$\ C) $\frac { 4 } { 5 }$\ D) $\frac { 5 } { 6 }$\ E) $\frac { 6 } { 7 }$
Q49 Reciprocal Trig & Identities View
Given that $0 < x < \frac { \pi } { 2 }$, $$\frac { \sec ( x ) - 1 } { 2 } = \frac { 3 } { \sec ( x ) + 1 }$$ the equality holds.\ Accordingly, what is the value of $\tan ( x )$?\ A) $\sqrt { 2 }$\ B) $\sqrt { 3 }$\ C) $\sqrt { 5 }$\ D) $\sqrt { 6 }$\ E) $\sqrt { 7 }$
Q50 Standard trigonometric equations Solve trigonometric equation for solutions in an interval View
Given that $x \in [ 0, 2 \pi )$, $$\cos ( 5 x ) = \cos ( 3 x ) \cdot \cos ( 2 x )$$ How many different solutions does the equation have?\ A) 3\ B) 6\ C) 8\ D) 11\ E) 12
Q51 Addition & Double Angle Formulae Trigonometric Identity Proof or Derivation View
For every real number $x$, the number $A$ is defined as $$\sum _ { k = 2 } ^ { 4 } \cos ( 2 k x ) = A$$ Accordingly, $$\sum _ { k = 2 } ^ { 4 } \cos ^ { 2 } ( k x )$$ What is the equivalent of the expression in terms of A?\ A) $A + 2$\ B) $A + 4$\ C) $\frac { \mathrm { A } + 1 } { 2 }$\ D) $\frac { A + 2 } { 2 }$\ E) $\frac { A + 3 } { 2 }$
ABC and BDE are equilateral triangles\ $[ \mathrm { BD } ] \perp [ \mathrm { AC } ]$\ $[ \mathrm { BF } ] \perp [ \mathrm { DE } ]$\ $[ \mathrm { FH } ] \perp [ \mathrm { BE } ]$\ $| \mathrm { AB } | = 16$ units
Accordingly, what is the area of triangle BFH in square units?\ A) $12 \sqrt { 3 }$\ B) $15 \sqrt { 3 }$\ C) $18 \sqrt { 3 }$\ D) $20 \sqrt { 3 }$\ E) $24 \sqrt { 3 }$
$ABC$ right triangle\ $[ \mathrm { AC } ] \perp [ \mathrm { BC } ]$\ $[AB]$ // $[DE]$\ $[BC]$ // $[FH]$\ $| \mathrm { AD } | = | \mathrm { DH } | = | \mathrm { HC } |$\ $| \mathrm { GE } | = 4$ units\ $| \mathrm { GF } | = 2$ units
Accordingly, what is the area of triangle ABC in square units?\ A) $9 \sqrt { 3 }$\ B) $12 \sqrt { 3 }$\ C) $15 \sqrt { 3 }$\ D) $18 \sqrt { 3 }$\ E) $20 \sqrt { 3 }$
Below are given squares $\mathrm { ABCD }$, $\mathrm { BLPR }$, and KLMN with side lengths of 3, 2, and 1 units respectively.
In the figure, points $\mathrm { A }$, $\mathrm { B }$, $\mathrm { K }$, and L are collinear.\ Accordingly, what is the area of triangle DNP in square units?\ A) 3\ B) 4\ C) 5\ D) 6\ E) 8
Q60 Straight Lines & Coordinate Geometry Section Ratio and Division of Segments View
The square ABCD given above is divided into four rectangles of equal area.
Accordingly, what is the ratio $\frac { | AE | } { | AD | }$?\ A) $\frac { 2 } { 3 }$\ B) $\frac { 3 } { 4 }$\ C) $\frac { 3 } { 5 }$\ D) $\frac { 5 } { 8 }$\ E) $\frac { 9 } { 16 }$
ABCD right trapezoid, ABD equilateral triangle\ $[AB]$ // $[DC]$\ $| \mathrm { BF } | = 4 | \mathrm { DF } |$\ $| \mathrm { AB } | = 8$ units
Accordingly, what is the area of right trapezoid ABCE in square units?\ A) $10 \sqrt { 3 }$\ B) $12 \sqrt { 3 }$\ C) $16 \sqrt { 3 }$\ D) $18 \sqrt { 3 }$\ E) $20 \sqrt { 3 }$
ABCD kite\ $[ \mathrm { AC } ] \perp [ \mathrm { BD } ]$\ $| \mathrm { AB } | = | \mathrm { BC } |$\ $| \mathrm { AD } | = | \mathrm { DC } |$\ $| \mathrm { BE } | = 4 | \mathrm { ED } |$\ $| \mathrm { AC } | = 16$ units
The area of kite ABCD in the figure is 160 square units.\ Accordingly, what is the perimeter of kite ABCD in units?\ A) $20 \sqrt { 5 }$\ B) $24 \sqrt { 5 }$\ C) $28 \sqrt { 5 }$