Posted by Ronnie Dobbs on October 16, 2002 at 16:57:13:
In Reply to: Have you done "derivatives [df(x)/dx]" yet ? (n/t) posted by Suubhotosh Khan on October 16, 2002 at 16:44:02:
No, we are not quite there yet...I believe we study that in the next unit.
: : Find the slope of the tangent line to the curve y = x^3 at the point (-1, -1).
: : So we're using...
: : lim x-> -1
: : [ f(x) - f(a) ] / x - a
: : lim x-> -1
: : [x^3 - f(-1)] / x - (-1) = [x^3 - (-1)] / x - (-1)
: : = lim x->-1 [x^3 + 1] / x + 1
: : This is where I'm stuck...can anyone shed some light on what my next step(s) is? Thanks.
: :