What is the mechanism of automatic derivation in tensorflow 2

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Import tensorflow as tf

Import numpy as np

# f (x) = derivative of a*x**2 + biconx + c

X = tf.Variable (0.0, name='x', dtype=tf.float32)

A = tf.constant (1. 0)

B = tf.constant (- 1.5)

C = tf.constant (1.0)

With tf.GradientTape () as tape:

Y = a * tf.pow (xmem2) + b * x + c

Dy_dx = tape.gradient (ymemery x)

Print (dy_dx)

It can be calculated that dy_dx = 2*a*x + b = 2 "1.0" 0.0 + (- 1.5) =-1.5

What we need to know is

(1) how GradienTape traces the function transformation path in the middle of y = a * tf.pow (XMagol 2) + b * x + c.

(2) how to find the derivative of the basic function block.

(3) how to realize the rule of derivation of compound function.

So much for the automatic derivation mechanism in tensorflow 2. I hope the above content can be of some help to you and learn more knowledge. If you think the article is good, you can share it for more people to see.