? asked in Science & MathematicsMathematics · 9 years ago

Some One Help Me Please?

6. ) let f(x)=x^2,evalute f(h-2)-f(-2)/h

H->0

7.) evalute lim-2x^2+x/x

x->0

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  • Josh K
    Lv 6
    9 years ago
    Favorite Answer

    6

    f(h-2) = (h-2)^2 = h^2 - 4h + 4

    f(-2) = (-2)^2 = 4

    f(h-2)-f(-2)/h = (h^2 - 4h)/h = h-4

    This lim as h --> 0 is -4

    7

    -2x^2+x/x = -2x+1 {just factor out an x and you get x*(-2x+1)/x}

    This limit as x --> 0 is 1

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