WB JEE 2010 | Functions Question 7 | Mathematics

WB JEE 2010

MCQ (Single Correct Answer)

-0.25

The domain of the function $$f(x) = \sqrt {{{\cos }^{ - 1}}\left( {{{1 - |x|} \over 2}} \right)} $$ is

($$-$$3, 3)

[$$-$$3, 3]

($$-$$ $$\infty$$, $$-$$3) $$\cup$$ (3, $$\infty$$)

($$-$$ $$\infty$$, $$-$$3] $$\cup$$ [3, $$\infty$$)

WB JEE 2010

MCQ (Single Correct Answer)

-0.25

For what values of x, the function $$f(x) = {x^4} - 4{x^3} + 4{x^2} + 40$$ is monotone decreasing?

0 < x < 1

1 < x < 2

2 < x < 3

4 < x < 5

WB JEE 2010

MCQ (Single Correct Answer)

-0.25

The minimum value of $$f(x) = {e^{({x^4} - {x^3} + {x^2})}}$$ is

$$-$$ e

$$-$$ 1

WB JEE 2011

MCQ (Single Correct Answer)

-0.25

The period of the function f(x) = cos 4x + tan 3x is

$$\pi$$

$${\pi \over 2}$$

$${\pi \over 3}$$

$${\pi \over 4}$$

WB JEE Subjects