'm stuck! I'm trying to find x using the cosine rule from: The answer is; x = 7.23 from: How? In another question i have to find the value of x which has the minimum value: I'm guessing i have to complete the square? but so do i take the route of the whole thing?
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For the first question, use the quadratic formula. The solutions for are . For the second question, completing the square is a good idea. You will get . Then the minimum value for b is .
i don't understand how to get the And the second one gives the answer to be ?
Originally Posted by Flexible i don't understand how to get the And the second one gives the answer to be ? The solutions for are: . For the second problem, the answer is .
How do you get I.e How?
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