Question bank/JEE Main/Mathematics
JEE MainMathematics
If f(x) = a log | x | + bx2 + x has extreme values at x = -1
and at x = 2, then find a+2b.
Show answer and solution
Clearly, domain (f) = R -
We have,
f(x) = a log | x | + bx2 + x
[IMAGE] Since f(x) has extreme values at x = -1 and x =

We have,
f(x) = a log | x | + bx2 + x
[IMAGE] Since f(x) has extreme values at x = -1 and x =

Source: Grass-G / M-02 Mathematics Paper-2.docx
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