Tamil Nadu Board of Secondary EducationHSC Commerce Class 11th

# If y = 2 + log x, then show that xy2 + y1 = 0. - Business Mathematics and Statistics

Sum

If y = 2 + log x, then show that xy2 + y1 = 0.

#### Solution

y = 2 + log x

y_1 = 0 +1/x

i.e., y_1 = 1/x

therefore y_2 = - 1/x^2

Now xy_2 + y_1 = x(- 1/x^2) + 1/x = (-1)/x + 1/x = 0

Concept: Differentiation Techniques
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