If the range of the function `y=(x-1)/(x+1)` on the interval `0lexle4` be `[a,b]` then the value of `5b-2a=`_________ .

Explanation

To solve the problem, we need to find the range of the function \( y = \frac{x-1}{x+1} \) on the interval \( [0, 4] \) and then compute \( 5b - 2a \) where \( [a, b] \) is the range of the function.

### Step-by-Step Solution:

1. **Rewrite the Function**:
We start with the function:
\[
y = \frac{x-1}{x+1}
...