# The function #f(x) = tan(3^x)# has one zero in the interval #[0, 1.4]#. What is the derivative at this point?

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The function #f(x) = tan(3^x)# has one zero in the interval #[0, 1.4]# . What is the derivative at this point?

The function

##### 1 Answer

Dec 1, 2016

#### Explanation:

If

Therefore

We were told that there is one zero on

Hence,

Now let's look at the derivative.

We know from above that