Amanda Lim's answer to Hong Wuen's Secondary 4 A Maths question.
or you can expand the whole thing into (x^0.5) - 2(x^1.5) + (x^2.5) and then differentiate.
You should get 0.5(x^-0.5) - 3(x^0.5) + 2.5(x^1.5) .
It is easier that way
You should get 0.5(x^-0.5) - 3(x^0.5) + 2.5(x^1.5) .
It is easier that way
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