Sharedsupport / 2016-02-29-subs.sagewsOpen in CoCalc
Examples for support purposes...
var('x,y')
y    = function('y')(x)
eqn  = diff(x^2+y^2==25,x)
sol0 = solve(eqn, diff(y,x))
sol1 = sol0[0].subs({x:3})
sol1.subs({y(x=3):4})
(x, y) D[0](y)(3) == (-3/4)

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