We can calculate the gradient of a tangent to a curve by differentiating. In order to find the equation of a tangent, we: Differentiate the equation of the curve Substitute the \(x\) value into the ...

Differentiation of algebraic and trigonometric expressions can be used for calculating rates of change, stationary points and their nature, or the gradient and equation of a tangent to a curve.

We present a new fully discrete method to solve a linear variable coefficient parabolic equation on a rectangular region. The scheme is an alternating direction implicit method which uses the third ...