algebra

f(t)=sqrtt^2+1
f(-9)=sqrt-0^2+1

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  1. Since sqrt t^2 = t, I will assume you mean
    f(t) = sqrt (t^2+1)
    and not f(t) = sqrt(t^2)+1 = t + 1
    I also will assume that the positive square root is to be used.

    I have no idea what your second line is supposed to mean. You have not asked a question.
    If you are trying to calculate f(0) or f(-9),then

    f(0) = sqrt (1) = 1
    f(-9) = sqrt(81 + 1) = 9.055

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  2. p=2l+2w forl

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