def f(x, y):
a = x * x
def mula(z):
return a * z
_, bprop = J(mula)(J(y))
return bprop(1)[1]
def f(x, y):
def sqx():
return x * x
def mulsqx(z):
return sqx() * z
_, bprop = J(mulsqx)(J(y))
return bprop(1)[1]