karooooo 3

Find the intervals in which the function
f(x)=3cos⁴x+10cos³x+6cos²x-3,0â‰¤xâ‰¤pi;is monotonically increasing or decreasing.

2 Answers

for a function to be monotonically increasing f(x)>0
I hope u can take the derivative and hence conclude

not dat too it is f'(x)â‰¥0 for monotonically increasin
had it been only >0 it is stricrly increasin

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