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# need help c4 mixed ex 2e q7b reply quickly if possible watch

1. i dont get how you get the answer of 8/15 i get limits of 1 and 0 but when i sub it into 2t^2 and 2t^4 i get 0?
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2. (Original post by oscar gul)
i dont get how you get the answer of 8/15 i get limits of 1 and 0 but when i sub it into 2t^2 and 2t^4 i get 0?
I haven't actually done this yet in C4 but I'm wondering if it might be to do with half of the loop being in the positive y region and half being in the negative y region? If you can work it out so you get the positive y bit and then work out the negative y bit desperately and add them that should give the answer hopefully might be completely different in which case I apologise
3. (Original post by Loralite)
I haven't actually done this yet in C4 but I'm wondering if it might be to do with half of the loop being in the positive y region and half being in the negative y region? If you can work it out so you get the positive y bit and then work out the negative y bit desperately and add them that should give the answer hopefully might be completely different in which case I apologise
im stupid. i forgot to integrate and thats why i screwed up, after i integrate i get the right answer
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