##
*Excercise 5 - *`Compute Cost`

`Compute Cost`

```
logprobs = np.multiply(np.log(A2),Y)
cost = - np.sum(logprobs)
```

What is the use of this piece of code ? When I copy pasted this in the exercise, I got wrong answer.

```
cost = -np.sum(Y * np.log(A2) + (1 - Y) * np.log(1 - A2)) / m
```

Then I tried this , from previous assignment and it worked. It is same as written in `Equation 13`

```
𝐽=−1𝑚∑𝑖=1𝑚(𝑦(𝑖)log(𝑎[2](𝑖))+(1−𝑦(𝑖))log(1−𝑎[2](𝑖))) ...(13)
```

If this is correct then what will be the value of logprobs.