Home
Class 12
MATHS
If f(x) = cos^2x + sec^2x, its value alw...

If `f(x) = cos^2x + sec^2x`, its value always is

A

`f(x) le 1`

B

`f(x)=1 `

C

`1 lt f lt 2 `

D

`f (x) ge 2`

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

If f(x) = sec 2x + cosec 2x, then f(x) is discontinuous at all points in

If f (x) = cos (log_e x) , find the value of : f(x) f(y)-1/2[f(x/y)+f(xy)] .

If 5 (tan ^(2) x - cos ^(2) x ) = 2 cos 2x +9 , then the value of cos 4 x is

If f(x) =x^2-3x+4 , then find the values of x satisfying f (x) =f (2x+1).

If f(x) = (cos^2 x + sin^4 x)/(cos^4x + sin^2 x) , then f(2016) is equal to

Find the points of local maxima and minima (if any) of each of the following functions. Find also the local maximum and minimum values. f(x) = sec x + log cos^2 x, 0 le x le 2 pi, x ne pi/2, (3pi)/(2)

If f(x) = cos x cos 2x cos 4x cos 8x cos 16x then find f' (pi/4)

Show that the function f(x) = cos 2x is periodic and find its period.

If f(x)=sgn(cos 2x - 2 sin x + 3) , where sgn () is the signum function, then f(x)