Tanh Activation

Apply the hyperbolic tangent activation element-wise.

Implement solve(x).

Returns. Return a float NumPy array of the same shape with values in $(-1,1)(-1,1)$.

Examples

Example 1

Input:

solve([-2.0, 0.0, 2.0])

Output:

[-0.964028, 0.0, 0.964028]

Example 2

Input:

solve([20.0, -20.0])

Output:

[1.0, -1.0]