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Given the function y=(x+1)(x-2)^2 find i) dy/dx ii) Stationary points and determine their nature
Here we have a function made from the product of two functions, so we canuse the product differenciation rule.
y=uv => dy/dx=udv/dx + vdu/dx
Therefore dy/dy=(x-2)^2 + 2(x-2)(x+1)
