Engineering Board Exam Reviewer · Derivatives of Trigonometric Functions · medium

Find y' if y=1+ x/ x.

1. 1 - x 2 x
2. 1 2 x
3. x + 1 2 x
4. - ≤ft( x + 1 ) x + 2 x 2 x

Answer

C. x + 1 2 x

Solution

Quotient rule: y'= x· x-(1+ x)(- x)/ 2x= 2x+ x+ 2x/ 2x=1+ x/ 2x.

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