CBSE Class 11-science Answered
The question is attached above
Asked by sudhanshubhushanroy | 08 Nov, 2017, 01:07: PM
Expert Answer
f'(x) will be a quadratic equation with imaginary roots and coeff of x2 is positive so it will lie above the x axis
so it is always positive.
Answered by Arun | 08 Dec, 2017, 05:16: PM
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