Question

Find the maximum value
of f(x) = |Cos5x +4|​

Answer 1

Answer:

Cos 5x=4 then you will get two values of cos theta.

Step-by-step explanation:

Answer 2

The maximum value of $\mid cos5x+4\mid$ =5

Step-by-step explanation:

We are given that

$f(x)=\mid cos5x+4\mid$

We know that

$\mid cos5x+4\mid\geq0$

We know that

$-1\leq Cosx\leq 1$

$-1\leq Cos 5x\leq 1$

$-1+4\leq Cos5x+4\leq 1+4$

$3\leq Cos5x+4\leq 5$

Therefore, the maximum value of$\mid cos5x+4\mid$ =5