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Math Help - First Degree Approximations

  1. #1
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    First Degree Approximations

    I'm not sure what I need to do for these questions and how to find the approximations.

    Given the function f(x)=1+x
    Enter the first degree approximation to this function when x=0.

    I have tried the answer 1 and it is not correct.

    Given the function f(x)=-1/(2*sqrt(1+x))
    Enter the first degree approximation to this function when x=0.

    I have tried the answer -1/2 and it is not correct.

    Any help would be great.

    Thanks, DLL.
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  2. #2
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    Use the Taylor Polynomial theorem?
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  3. #3
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    I have done this and I still get 1 and -1/2 respectively. I need to know how to find the first degree approximations for these function.
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