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m.auld64
Group Title
use implicit differentiation to find the slope of the tangent line to the curve
3^x + log_2(xy) = 10
at the point (2,1) and use it to find the equation of the tangent line in the form y = mx + b
 2 years ago
 2 years ago
m.auld64 Group Title
use implicit differentiation to find the slope of the tangent line to the curve 3^x + log_2(xy) = 10 at the point (2,1) and use it to find the equation of the tangent line in the form y = mx + b
 2 years ago
 2 years ago

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experimentX Group TitleBest ResponseYou've already chosen the best response.0
differentiate it and get the differential equation 3^x*ln(3) + 1/(xy)*{1+xdy/dx} = 0 find value of dy/dx which is .. roughly 21 http://www.wolframalpha.com/input/?i=3%5E2*ln%283%29+%2B+1%2F2%281%2Bx%29+%3D+0 which is the slope of the tangent, since you know slope m, and you have point (2,1) find the value of b, you have your tangent
 2 years ago

experimentX Group TitleBest ResponseYou've already chosen the best response.0
oops sorry, slope is around 1.05 http://www.wolframalpha.com/input/?i=3%5E2*ln%283%29+%2B+1%2F%282%281%2Bx%29%29+%3D+0
 2 years ago

experimentX Group TitleBest ResponseYou've already chosen the best response.0
is that log base 2??
 2 years ago

Nodata Group TitleBest ResponseYou've already chosen the best response.2
I got this: \[(\ln 3)3^x+\frac{1}{(\ln 2)xy}\left(x\frac{dy}{dx}+y\right)=0\]
 2 years ago

Nodata Group TitleBest ResponseYou've already chosen the best response.2
you can solve for \[\frac{dy}{dx}\] and substitute the coordinates given. so you'll have the slope.
 2 years ago
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