Searate the interval into subintervals in which the function `f(x)=sin^4x+cos^4x`

Separate the interval [0,pi/2] into sub intervals in which function f(x)=sin^4(x)+cos^4(x) is strictly increasing or decreasing.

Separate the interval [0,(pi)/(2)] into sub intervals in which function f(x)=sin^(4)(x)+cos^(4)(x) is strictly increasing or decreasing.

Separate the interval [0,\ pi//2] into sub-intervals in which f(x)=sin^4x+cos^4x is increasing or decreasing.

Sparate the interval [0, pi/2] into sub-intervals in which f(x)=sin^(4) x+cos^(4) x is decreasing

Sparate the interval [0, pi/2] into sub-intervals in which f(x)=sin^(4) x+cos^(4) x is increasing

Separate the intervals [0, (pi)/(2)] into sub intervals in which f(x)= sin^(4)x + cos^(4)x is increasing or decreasing.

The interval in which the function f(x)=sin x+cos x in x in[0,2 pi] is

Find the interval in which the function f(x)=sin(log x)-cos(log x) increase

Find the intervals in which the function f(x)=(4x^(2)+1)/x is decreasing

Find the intervals in which the function f(x)=(4x^(2)+1)/x is increasing