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BITSAT 2020
List of top Questions asked in BITSAT- 2020
The line joining (5,0) to (10cosθ,10sinθ) is divided internally in the ratio 2:3 at point P. If θ varies, the locus of P is
BITSAT - 2020
BITSAT
Mathematics
Coordinate Geometry
The equation
x²-2√(3)xy+3y²-3√(3)y-4=0
represents
BITSAT - 2020
BITSAT
Mathematics
Coordinate Geometry
A ray of light coming from the point (1,2) is reflected at a point A on the x-axis and then passes through the point (5,3). The coordinates of point A is
BITSAT - 2020
BITSAT
Mathematics
Coordinate Geometry
The locus of the point of intersection of two tangents to the parabola
y²=4ax
which are at right angle to one another is
BITSAT - 2020
BITSAT
Mathematics
sections of a cone
The parabola having its focus at (3,2) and directrix along the y-axis has its vertex at
BITSAT - 2020
BITSAT
Mathematics
sections of a cone
If z₁=\sqrt3+i\sqrt3 and z₂=\sqrt3+i, then the complex number
((z₁)/(z₂))⁵0
lies in the
BITSAT - 2020
BITSAT
Mathematics
Complex numbers
The length of the chord x+y=3 intercepted by the circle
x²+y²-2x-2y-2=0
is
BITSAT - 2020
BITSAT
Mathematics
Circles
The lengths of the tangents drawn from any point on the circle
15x²+15y²-48x+64y=0
to the circles
5x²+5y²-24x+32y+75=0 and 5x²+5y²-48x+64y+300=0
are in the ratio of
BITSAT - 2020
BITSAT
Mathematics
Circles
The number of integral values of λ for which
x²+y²+λ x+(1-λ)y+5=0
is the equation of a circle whose radius cannot exceed 5, is
BITSAT - 2020
BITSAT
Mathematics
Circles
Match List I with List II and select the correct answer using the code given below the lists.
List I
• [(A)] f(x)=cos x • [(B)] f(x)=ln x • [(C)] f(x)=x²-5x+4.3 • [(D)] f(x)=eˣ
List II
• [1.] The graph cuts y-axis in infinite number of points • [2.] The graph cuts x-axis in two points • [3.] The graph cuts y-axis in only one point • [4.] The graph cuts x-axis in only one point • [5.] The graph cuts x-axis in infinite number of points
BITSAT - 2020
BITSAT
Mathematics
Application of derivatives
For any differentiable function y of x,
(d²x)/(dy²)((dy)/(dx))³+(d²y)/(dx²)=
BITSAT - 2020
BITSAT
Mathematics
Application of derivatives
The number of points at which the function
f(x)=(1)/(log|x|)
is discontinuous is
BITSAT - 2020
BITSAT
Mathematics
Continuity and differentiability
If
f(x)= begincases (xlog(cos x))/(log(1+x²)), & x≠0
0, & x=0 endcases
then f(x) is
BITSAT - 2020
BITSAT
Mathematics
Continuity and differentiability
If the sum of odd-numbered terms and even-numbered terms in the expansion of (x+a)ⁿ are A and B respectively, then the value of (x²-a²)ⁿ is
BITSAT - 2020
BITSAT
Mathematics
permutations and combinations
All the words that can be formed using alphabets A, H, L, U and R are written as in a dictionary (no alphabet is repeated). The rank of the word RAHUL is
BITSAT - 2020
BITSAT
Mathematics
permutations and combinations
The number of real roots of the equation
3⁹C₃r-1-3⁹Cᵣ²=3⁹Cᵣ²-1-3⁹C₃r
is
BITSAT - 2020
BITSAT
Mathematics
permutations and combinations
If the third term in the expansion of [x+x\log_¹⁰ˣ]⁵ is 10⁶, then x may be
BITSAT - 2020
BITSAT
Mathematics
permutations and combinations
If
sumᵣ=0ⁿ(r+2)/(r+1)ⁿCᵣ=(2ⁿ-1)/(6),
then n=
BITSAT - 2020
BITSAT
Mathematics
permutations and combinations
If three vertices of a regular hexagon are chosen at random, then the chance that they form an equilateral triangle is
BITSAT - 2020
BITSAT
Mathematics
Probability
A man takes a step forward with probability 0.4 and backward with probability 0.6. The probability that at the end of eleven steps he is one step away from the starting point is
BITSAT - 2020
BITSAT
Mathematics
Probability
The general solution of the equation
sin 2x + 2sin x + 2cos x +1 =0
is:
BITSAT - 2020
BITSAT
Mathematics
Trigonometry
If sin x=cot(tan x), then sin 2x is equal to:
BITSAT - 2020
BITSAT
Mathematics
Trigonometry
If sintheta₁+sintheta₂+sintheta₃=3, then costheta₁+costheta₂+costheta₃=
BITSAT - 2020
BITSAT
Mathematics
Trigonometry
If A and B are positive acute angles satisfying
3cos²A+2cos²B=4 and (3sin A)/(sin B)=(2cos B)/(cos A),
then the value of A+2B is equal to:
BITSAT - 2020
BITSAT
Mathematics
Trigonometry
If
sin⁻1((2a)/(1+a²)) -cos⁻1((1-b²)/(1+b²)) =tan⁻1((2x)/(1-x²)),
then what is the value of x?
BITSAT - 2020
BITSAT
Mathematics
Trigonometry
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