# tanh

tanh(x)

Compute hyperbolic tangent of `x`

## Examples

1. Compute hyperbolic tangent of a number:

``````julia> tanh(0.5)
0.4621171572600098``````

This example calculates the hyperbolic tangent of the number 0.5.

2. Calculate hyperbolic tangent of an array:

``````julia> arr = [1.0, 2.0, 3.0];
julia> tanh.(arr)
3-element Array{Float64,1}:
0.7615941559557649
0.9640275800758169
0.9950547536867305``````

The `tanh.` notation applies the `tanh` function element-wise to the array `arr`.

3. Compute hyperbolic tangent of a matrix:
``````julia> matrix = [1.0 2.0; 3.0 4.0];
julia> tanh.(matrix)
2×2 Array{Float64,2}:
0.761594  0.964028
0.995055  0.999329``````

Using the `tanh.` notation, we can calculate the hyperbolic tangent of each element in the matrix.

Common mistake example:

``````julia> tanh("[1, 2, 3]")
ERROR: MethodError: no method matching tanh(::String)``````

In this example, the `tanh` function is called with a string as an argument. The `tanh` function operates on numeric types, so passing a string will result in a `MethodError`. Make sure to provide valid numeric inputs to the `tanh` function.