Question

If $f\left(x\right)=\cos x-1,$ then select the correct graph of $|f\left(x\right)|.$

• A.
• B.
• C.

Answer 1

The correct option is B

Given $f\left(x\right)=\cos x-1$
Now, the graph of $\cos x$ can be shown as:

Now shifting the graph down by 1 units will give the graph of $f\left(x\right)$ as:

Since we have the graph of $f\left(x\right)$ now, for $|f\left(x\right)|$ we will flip all the $f\left(x\right)$ which is below the x-axis as: