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Let the mappings `f:R to R and g:R to R` be defined respectively by `f(x)=5|x|-x^(2)` and `g(x)=2x-3`. Then the value of (gof)(-2) is -

A

9

B

8

C

7

D

10

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A
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CHHAYA PUBLICATION-MCQ ZONE -Question Paper 3
  1. Let A={x, y, z} be a given set and a relation R on A ios defined as fo...

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  2. Let the function f:R to R be defined by f(x)=x+sinx for all x in R. T...

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  3. Let the mappings f:R to R and g:R to R be defined respectively by f(...

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  4. Let A={1, 2, 3} and R={(2, 2),(3, 3),(1, 2)} be a relation on A. Then ...

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  5. State which one of the following is true -

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  6. If cos^(-1) sqrt(p)+cos^(-1)sqrt(1-p)+cos^(-1) sqrt(1-q)=(3pi)/(4), t...

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  7. In the equation px^2+rx+r=0 ratio of the roots are a:bthen prove that...

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  8. If n and p are two parameters of binomial distribution then its stand...

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  9. If the cartesian equation of a line AB is (x-1)/(2)=(2y-1)/(12)=(z+5...

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  10. The straight line (x-3)/(2)=(y+4)/(0)=(z-2)/(5) is perpendicular to ...

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  11. The angle between the lines -6x=y=4z and 2x=3y=-z is -

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  12. The shortest distance between the lines whose vector equations are ve...

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  13. Two events A and B are such that P(A)=(1)/(4), P(B//A)=(1)/(2) and P(...

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  14. The probability that a regularly scheduled flight departs on time is ...

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  15. A sample of 4 items is drawn at random from a lot of 10 items, contain...

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  16. A and B are two independent events such that P(A)=(1)/(2) and P(B)=(...

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  17. If n things are arranged at random in a row then the probability that ...

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  18. If A=[(3,5),(2,0)] and B=[(1,17),(0,-10)] then |AB| is equal to -

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  19. The inverse of the matrix [(5,-2),(3,1)] is -

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  20. If A(i)=[(a^(i),b^(i)),(b^(i),a^(i))] and |a| lt 1,|b| lt 1 then the ...

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