Question: If a is the learning rate and f = x 2 + y 2 - 2 y + 4 with initial value ( x 0

If a is the learning rate and f=x2+y2-2y+4 with initial value (x0,y0)=(0,0), then
after first iteration of the Gradient Decent we get (x1,y1) as
a.(0,-4a)
b.(0,2a)
c.(0,-2a)
d.(0,4a)
If a is the learning rate and f = x 2 + y 2 - 2 y

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