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The range of the function f(x) = cos[x] ...

The range of the function `f(x) = cos[x]` where `-pi/2 lt x lt pi/2` is

A

[-1,1,0]

B

[cos 1, cos 2]

C

[cos 1, cos 2,1]

D

[0,1]

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The correct Answer is:
C
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AAKASH SERIES-FUNCTIONS -EXERCISE -II
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  7. Let f(x) = sinx and g(x) = log|x|.If the ranges of composite functions...

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  8. If f from [-1,1] into [-1,1] defined by f(x) =3x-5 then f is:

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  9. If f: D to R be the function with domain: D={x: -pi/2 lt x lt pi/2} ...

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  10. If f: R to R defined by f(x) ={{:(2x+5, if, x gt 0),(3x-2, if, x le 0...

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  11. If f: R to R is defined by f(x) =x+ sqrt(x^(2)), then f is:

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  12. A={x:-1 le x le 1}, f: A to A defined by f(x) =x|x|. Then f is:

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  14. y=f(x) =x/(1+|x|), x in R, y in R is

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  15. f: R to R is a function defined by f(x) =(e^(|x|) -e^(-x))/(e^(x) + e^...

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  16. If f: R to R defined by f(x) =(e^(x^(2)) -e^(-x^(2)))/(e^(x^(2)) +e^(-...

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  17. If f:[0,1] to [-1,3] defined by f(x) =x^(2)+x+1, then f is

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  19. If f:R rarr(0, 1] is defined by f(x)=(1)/(x^(2)+1), then f is

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  20. If f: R to R is defined by f(x)=(x^(2)-4)/(x^(2)+1), then f(x) is

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