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If f (x+y, x-y)=xy, then the arithmetic ...

If `f (x+y, x-y)=xy,` then the arithmetic mean of `f (x,y) and f(y,x)` is-

A

0

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1

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x

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y

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CHHAYA PUBLICATION-MCQ's-QUESTION PAPER 2
  1. If P (A) is the power set of A= {1,3,5,7} then-

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  2. Let A + {-1,0,1,2,3} and f : A to Z be given by f(x) =x^(2) -5x +7, wh...

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  3. Range of the relation R= {x ,1/x}:0lt x lt 5 and x is an integer " is

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  4. Domain of the relation R = {(x,y) : x in NN,. Y in NN and 2x+y=41} is-

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  5. If for all values of x and y , f(x+y) =f(x) f(y) and f(5) =2, f'(0)=3,...

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  6. The domain of definition of the function sin ^(-1) [log (3) ((x)/(3))]...

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  7. The equation of the parabola with vertex at the origin and directix is...

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  8. lim (xto0) (1-cos mx)/(1-cos nx) is equal to-

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  9. The period of the function f(x) = sin 2x is-

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  10. If the function f(x)={{:((x ^(2) -9)/(x-3), "when" x ne3),(2x+a, "whe...

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  11. If 3f(x) +2f (-x) =5 (x-2) then the value fo f(1) is-

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  12. lim (xto0) (a ^(x) -b^(x))/(e ^(x)-1)

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  13. The function f(x)= sin | log (x+ sqrt(x^(2) +1)) | is-

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  14. If f (x-2) =2x ^(2) +3x -5, then the value of f(2) is-

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  15. If f(x) = cos [pi ^(2)] x+cos [-pi^(2)]x, thenthe value of f ((pi)/(2)...

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  16. The value of lim (xto(pi)/(2))tan^(2) x (sqrt( 2 sin ^(2) x+3 sin x+4...

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  17. If f (x+y, x-y)=xy, then the arithmetic mean of f (x,y) and f(y,x) is-

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  18. The range of f (x) =cos ""x/3 is-

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  19. The differential coefficient of the function f (x) =|x-1| + |x-3| at ...

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  20. If f (x) = tan ^(-1) ((cos x- sinx)/(cos x+ sin x)) then the value of ...

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