difft (Function)
Command last updated 23/11/2022.
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difft(x, y, t, n)
- x is an expression in terms of t
- y is an expression in terms of t
- t is a variable name
- n is the derivative order
n must be 0, 1 or 2.
Returns \(\dfrac{ d^{n} y }{ d x^{n} }\).
Example
Find \(\dfrac{dy}{dx}\) when \(t=2\) given that \(x = \dfrac{6t}{t+1}\) and \(y = \dfrac{-8}{t^2 + 4}\). (2023 Specialist Exam 2 Section A Question 9)
