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Math Help - defferentiation

  1. #1
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    Post differentiation

    Hi there, I have two problem that I just can't seem to figure out. They are as follows (1) Find the equation of the normal to y= x^2-3x+2 which have a gradient of {\frac{1}{2}} and the second one(2) find the value of K for which y=2x +k is a normal to y= 2x^2-3.
    Can some one please help me with this? Thank you very much in advance.
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  2. #2
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    Quote Originally Posted by scrible View Post
    Hi there, I have two problem that I just can't seem to figure out. They are as follows (1) Find the equation of the normal to y= x^2-3x+2 which have a gradient of {\frac{1}{2}} and the second one(2) find the value of K for which y=2x +k is a normal to y= 2x^2-3.
    Can some one please help me with this? Thank you very much in advance.
    for (1) :

    find the point on the curve with slope = -2, then find the equation of the line through that point with slope = 1/2

    for (2) :

    same strategy ... find the point on the curve with slope = -1/2 , then find the equation of the line through that point with slope = 2.
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  3. #3
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    Quote Originally Posted by skeeter View Post
    for (1) :

    find the point on the curve with slope = -2, then find the equation of the line through that point with slope = 1/2

    for (2) :

    same strategy ... find the point on the curve with slope = -1/2 , then find the equation of the line through that point with slope = 2.
    I am rushing off to work this morning but I just could not wait to see what the reply would be. thank you very much for your help and advise. I most certainly would try it.
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