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Math Help - Anti-diffrentiation

  1. #1
    Member Awsom Guy's Avatar
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    Anti-diffrentiation

    Find the equation of the curve which passes through the point (1,8) given that its gradient function is 2x+5.

    What equation?

    How do i find that equation I am sooo stuck.
    Thanks
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by Awsom Guy View Post
    Find the equation of the curve which passes through the point (1,8) given that its gradient function is 2x+5.

    What equation?

    How do i find that equation I am sooo stuck.
    Thanks
    Why is this in pre-calculus. You have used the term differentiation which makes it calculus.

    If the gradient is 2x+5 the curve has equation y=x^2+5x+c for some constant c. You are told that it passess through (1,8) which will allow you to find c.

    CB
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  3. #3
    Member Awsom Guy's Avatar
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    oh wow I should have been able to think that through thanks.
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  4. #4
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    Anti-Differentiation

    Isn't this problem just an indefinite integral?
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  5. #5
    Grand Panjandrum
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    Quote Originally Posted by DavidRUK View Post
    Isn't this problem just an indefinite integral?
    Yes, but if its taught as the inverse process of differentiation (and integration as such has not been taught) calling it anti-differentiation makes some sort of sense to some educationalists.

    CB
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