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- ; Demo of symbolic derivatives.
- ; x is deliberately left undefined, so Mercury will not be able to simplify
- ; to a real value.
- f(x) := EXP(x SIN(x))
- a = deriv(f(x),x)
-
- ; numerical derivatives
- b = deriv(f(y),y)
- c = (f(y + eps) - f(y)) / eps
- eps = 1e-10
- y = 1