Square root of x squared

Is Tex2Img_1405304270 ?

The answer is no. Correct answer is Tex2Img_1405304384

See the following example how this concept is applied in H2 math

Example 1

Differentiate Tex2Img_1405304606 with respect to x

Tex2Img_1405304802

Therefore

Ans: -1 if sin x > 0, 1 if sin x < 0

Example 2

normal

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