Work out sinusoidal function instantly with clear inputs, formula shown and shareable results.
Evaluating a sinusoid means substituting x into A·sin(Bx + C). Differentiating gives dy/dx = A·B·cos(Bx + C), the instantaneous rate of change at that point.
Sinusoid
y = A·sin(Bx + C)
Derivative
dy/dx = A·B·cos(Bx + C)
Radians. Convert degrees by multiplying by π/180 before entering the value.
Add π/2 to C, since cos u = sin(u + π/2).