Find `(d^2y)/(dx^2)`, if `y=x^3+tanx`.

Explanation

To find the second derivative \(\frac{d^2y}{dx^2}\) of the function \(y = x^3 + \tan x\), we will follow these steps:

### Step 1: Find the First Derivative \(\frac{dy}{dx}\)

We start by differentiating \(y\) with respect to \(x\):

\[
y = x^3 + \tan x
...