https://unisium.io/guides/derivative-constant-multiple-rule
Derivative Constant Multiple Rule: Factor Constants Out of Derivatives
Jun 12, 2026 - The derivative constant multiple rule says d/dx[c f(x)] = c f'(x) when c is independent of x and f is differentiable. If the factor depends on x, use the...
constant multiple ruleout ofderivativefactorconstants