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5 years ago
import torch
x = torch.tensor(3.)
w = torch.tensor(4., requires_grad=True)
b = torch.tensor(5., requires_grad=True)
y = w * x + b
y
tensor(17., grad_fn=<AddBackward0>)
y.backward()
print('dy/dx', x.grad)
print('dy/dw', w.grad)
print('dy/db', b.grad)
dy/dx None dy/dw tensor(3.) dy/db tensor(1.)