First Derivative of Sine x Demonstrated by Graphical Method
- Lew W.S.
Use the slider to move point P along the y = sin x function and note the gradient of the tangent at that point. A plot of the gradient of the tangent vs the x coordinate of P ie which forms coordinates of new point Q, (by tracing Q as P moves) will reveal that the derivate of sin x is actually cos x.
The check boxes and sliders are relatively explanatory and intuitive to learn quickly. Move point P using slider Px . Enable tracining of Q Make you own hypothesis about the derivate of sin x