Is it an error in the tutorial?

1

In url: https://pytorch.org/tutorials/beginner/blitz/autograd_tutorial.html

Gradients section, the Zi|xi = 6(xi+2) = 18 rather than 27?

2

No, x_i = 1, y_i = x_i + 2 = 3, z_i = y_i * y_i * 3 = 3 * 3 * 3 = 27.

Best regards

Thomas