A function `f(x)` is defined as `f(x)=x^2+3`. Find `f(0), F(1), f(x^2), f(x+1)` and `f(f(1))`.

Explanation

To solve the problem step by step, we will evaluate the function \( f(x) = x^2 + 3 \) for the specified inputs.

### Step 1: Find \( f(0) \)
To find \( f(0) \), we substitute \( x = 0 \) into the function:
\[ f(0) = 0^2 + 3 = 0 + 3 = 3 \]

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