See Rifkee Muhd's answer to xinrann's Secondary 4 A Maths question

Rifkee Muhd's answer to xinrann's Secondary 4 A Maths question.

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Date Posted: 6 years ago

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Xinrann

6 years ago

sorry can i know why is there a 1/2 square root y?

Rifkee Muhd

6 years ago

Using Chain Rule of Differentiation where derivative of y = sqrt(x) is in the form of dy/dx = 1/2sqrt(x) * 1 (the 1 is obtained by differentiating what's inside the square root which in this case is just x. Apply this rule to the question.