CBSE Class 12-science Answered
The maximum and the minimum values, if any of the following functions f (x) = 3x2 + 6x + 8, 
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
We have,
f (x) = 3x2 + 6x + 8
f (x) = 3(x2 + 2x + 1) + 5 = 3(x + 1)2 + 5Now, 
for all 
for all 
for all 
for all Thus, 5 is the minimum value of f (x) which it attains at x = – 1
Since f (x) can be made as large as we please. Therefore, the maximum value does not exist
Answered by | 04 Jun, 2014, 03:23: PM
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