# Python – tensorflow.math.erf()

TensorFlow is open-source Python library designed by Google to develop Machine Learning models and deep learning  neural networks.

erf() is used to compute element wise Gauss error function.

Syntax: tensorflow.math.erf(   x, name)

Parameters:

• x: It’s the input tensor. Allowed dtypes are bfloat16, half, float32, float64.
• name(optional): It defines the name for the operation.

Returns: It returns a tensor of same dtype as x.

Example 1:

## Python3

 `# importing the library ` `import` `tensorflow as tf ` ` `  `# Initializing the input tensor ` `a ``=` `tf.constant([``1``, ``2``, ``3``, ``4``, ``5``], dtype ``=` `tf.float64) ` ` `  `# Printing the input tensor ` `print``(``'Input: '``, a) ` ` `  `# Calculating Gauss error ` `res ``=` `tf.math.erf(x ``=` `a) ` ` `  `# Printing the result ` `print``(``'Result: '``, res) `

Output:

```Input:  tf.Tensor([1. 2. 3. 4. 5.], shape=(5, ), dtype=float64)
Result:  tf.Tensor([0.84270079 0.99532227 0.99997791 0.99999998 1.        ], shape=(5, ), dtype=float64)

```

Example 2: Visualization

## Python3

 `# importing the library ` `import` `tensorflow as tf ` `import` `matplotlib.pyplot as plt ` ` `  `# Initializing the input tensor ` `a ``=` `tf.constant([``1``, ``2``, ``3``, ``4``, ``5``], dtype ``=` `tf.float64) ` ` `  `# Calculating Gauss error ` `res ``=` `tf.math.erf(x ``=` `a) ` ` `  `# Plotting the graph ` `plt.plot(a, res, color ``=``'green'``) ` `plt.title(``'tensorflow.math.erf'``) ` `plt.xlabel(``'Input'``) ` `plt.ylabel(``'Result'``) ` `plt.show() `

Output:

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