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Thread: Can someone please check my solutions to 7a and 22b

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    Can someone please check my solutions to 7a and 22b

    https://imgur.com/gallery/z7tsn

    Can someone please send me solutions cause I'm not getting the same answer as the book to 7a and is that the correct integral for 22b can you please integrate that if you can please. I'm stuck

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    Re: Can someone please check my solutions to 7a and 22b

    Quote Originally Posted by kpad5991 View Post
    https://imgur.com/gallery/z7tsn

    Can someone please send me solutions cause I'm not getting the same answer as the book to 7a and is that the correct integral for 22b can you please integrate that if you can please. I'm stuck
    For 7a), that's not the right integral for the area of the given region. Your integral finds the area under the exponential curve, but you want the area between a horizontal line and the exponential curve.

    A hint to get the right answer for 7a) without doing any more integrating: the desired area is the area of a certain rectangle minus the area under the exponential curve.

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    Re: Can someone please check my solutions to 7a and 22b

    Quote Originally Posted by kpad5991 View Post
    https://imgur.com/gallery/z7tsn

    Can someone please send me solutions cause I'm not getting the same answer as the book to 7a and is that the correct integral for 22b can you please integrate that if you can please. I'm stuck
    For 22b), you have made an error in the squaring. Double check the exponential term (and your index laws if need be).

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    Re: Can someone please check my solutions to 7a and 22b

    7a) The integral gives the area UNDER the curve. You need to subtract that from 2 (area of rectangle) to get the correct answer.



    22b)
    Last edited by fan96; 12 Jan 2018 at 3:41 PM.

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    Re: Can someone please check my solutions to 7a and 22b

























    I hope everything was correct lol. I'm new to LaTeX input so I hope I didn't make a mistake haha
    Last edited by captainhelium; 12 Jan 2018 at 6:00 PM.
    2017 HSC: Eng (Adv.) · 3U Math · 4U Math · Chem · Phys · Bio

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