Can someone tell me what i did wrong | Mathematics | Page 1

timid galleon Jun 25, 2023, 10:46 PM

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really need help on this problem, sorry if my work is messy

timid galleon Jun 25, 2023, 11:13 PM

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Angry_cry

hushed raven Jun 25, 2023, 11:32 PM

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i checked your picture selection and your integration, and there were no problems with those. the only problem was that you've set up the wrong integration. specifically, the bounds are incorrect.

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try this instead:

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(1) desmos sketch

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https://www.desmos.com/calculator/szafjhwayb

Desmos

solution12345

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(2) wolfram alpha

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https://www.wolframalpha.com/input?i2d=true&i=Integrate[\(40)12x-Divide[x%2C3]\(41)%2C{x%2C0%2CDivide[1%2C2]}]%2BIntegrate[\(40)Divide[3%2Cx]-Divide[x%2C3]\(41)%2C{x%2CDivide[1%2C2]%2C3}]

Integrate[(12x-Divide[x,3]),{x,0,Divide[1,2]}]+Integrate[(Divide[3,...

Wolfram|Alpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.

timid galleon Jun 25, 2023, 11:32 PM

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so youre telling me the integral should be 0 to 1/2 instead of 0 to 6

hushed raven Jun 25, 2023, 11:33 PM

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yeah

timid galleon Jun 25, 2023, 11:33 PM

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omg

hushed raven Jun 25, 2023, 11:33 PM

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timid galleon Jun 25, 2023, 11:33 PM

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i had that in my head but didnt try it out

hushed raven Jun 25, 2023, 11:33 PM

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ah, i see

timid galleon Jun 25, 2023, 11:33 PM

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everything else seems fine?

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sorry ive just been stressing on this problem for the past 2 hours

hushed raven Jun 25, 2023, 11:34 PM

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yes. (1) i believe your picture selection looks correct. top left. (2) i believe your integration is correct. i was able to reconstruct your work and it came out perfectly, even computationally

timid galleon Jun 25, 2023, 11:34 PM

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so would i just try it out with this

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hushed raven Jun 25, 2023, 11:34 PM

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timid galleon so would i just try it out with this

yeah, and please let me know!

timid galleon Jun 25, 2023, 11:35 PM

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you are a life saver ill try and solve and get back to you

hushed raven Jun 25, 2023, 11:35 PM

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timid galleon you are a life saver ill try and solve and get back to you

np, but you might have to mention my name explicitly like this: @hushed raven .

timid galleon Jun 25, 2023, 11:35 PM

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is that allowed?

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im new to the server

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some servers dont allow that

hushed raven Jun 25, 2023, 11:36 PM

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i am actually new as well, but otherwise i can't get notified. you are responding with me here anyway, so you're beyond welcome to do it!!

timid galleon Jun 25, 2023, 11:36 PM

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can i ask you something else?

hushed raven Jun 25, 2023, 11:36 PM

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just not randomly

timid galleon Jun 25, 2023, 11:36 PM

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its more or less an example

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of the problem

hushed raven Jun 25, 2023, 11:36 PM

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timid galleon its more or less an example

ok fire it away

timid galleon Jun 25, 2023, 11:37 PM

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this obviously isnt it

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but would my integral be 0 to 2 and 2 to 6?

hushed raven Jun 25, 2023, 11:38 PM

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yeah, one of the bounds would be x=0 to 2, and the other x=2 to 6

timid galleon Jun 25, 2023, 11:38 PM

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its based of where it intersects correct

hushed raven Jun 25, 2023, 11:38 PM

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yeah

timid galleon Jun 25, 2023, 11:38 PM

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so 2 intersects and then also 6

hushed raven Jun 25, 2023, 11:39 PM

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yes, those are where all the sharp corners are

timid galleon Jun 25, 2023, 11:39 PM

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okay thank you, i was contemplating dropping from this one problem

hushed raven Jun 25, 2023, 11:39 PM

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timid galleon okay thank you, i was contemplating dropping from this one problem

oh no ...!

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well, i'm glad i've been helpful!

timid galleon Jun 25, 2023, 11:39 PM

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its a 6 week course

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and i failed to acknowledge how hard it is

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let me get back to you with my results tho

#Can someone tell me what i did wrong