A little code problem

1

a = torch.tensor([4.], requires_grad=True)
print(a)
b = a.pow(3)
print(b)
b.backward()
print(a.grad)

tensor([4.], requires_grad=True)
tensor([64.], grad_fn=)
tensor([48.])

is the a.grad=3?

2

Not sure what exactly the question is. But, read a.grad as the derivative of b with respect to a which in this case is 3*(4^2) = 48.

4

I was just wanting to reply the same. Agree with you!

1 Like