If `y=(tan x+secx)`, prove that `(d^(2)y)/(dx^(2))=(cosx)/((1-sinx)^(2))`

Explanation

To prove that \(\frac{d^2y}{dx^2} = \frac{\cos x}{(1 - \sin x)^2}\) for \(y = \tan x + \sec x\), we will follow these steps:

### Step 1: Differentiate \(y\)
We start with the function:
\[ y = \tan x + \sec x \]
We differentiate \(y\) with respect to \(x\):
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