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 Author Comment/Response Sue 02/27/11 2:22pm Hi I'm trying to find the equation of the tangent to the curve y=x^2+2 at (3,4). However, is difficult finding the right the code. Here's the codes I've tried. f[x_]:=x^2+2 f'[x] I get the 2x, which is the derivative then I plug in 3 for f'[x] in order to get the slope=6. y-4=6(x-3)->6x-y-14=0 (the equation of the tangent), but not sure how to graph that. So I tried Plot[{f[x], f'[x]}, {x, 3, 4}] in order to graph both the tangent and the original function, but the graphs are wrong. What I am doing wrong ? URL: ,

 Subject (listing for 'Find the equation of the tangent to the curve') Author Date Posted Find the equation of the tangent to the curve Sue 02/27/11 2:22pm Re: Find the equation of the tangent to the curve Isaac 02/28/11 10:32am
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