Hi
Solving doesn't give the minimum value of the function, it gives such that the minimum value is . Hence, computing should give you . (according to my calculator, that's right )
Q: Find the minimum value of .
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So I know that to find the minimum value, I have to differentiate the equation. Then make it equal to zero and find the value of by rearranging the equation to make the subject so I did that ... but got the wrong answer.
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Method:
Let
.
...That is not the correct answer. The correct answer is so where have I gone wrong? Thanks in advance.