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IsTim
Group Title
Determine the points on each curve that correspond to the given slope of the tangent.
y=(2x1)(4+x^2), m=3
 2 years ago
 2 years ago
IsTim Group Title
Determine the points on each curve that correspond to the given slope of the tangent. y=(2x1)(4+x^2), m=3
 2 years ago
 2 years ago

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IsTim Group TitleBest ResponseYou've already chosen the best response.0
My final answers are (4/3,3.703) and (1,9). The correct answers are (1.53,3.42) and (1.20,8.70)
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.1
don't understand the question are there 2 functions?
 2 years ago

IsTim Group TitleBest ResponseYou've already chosen the best response.0
Only one function, but the slope is 3.
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.1
ok so set dy/dx = 3 dy/dx = 2(x^24) + 2x(2x1) = 3 > 6x^2 2x 11 = 0 use quadratic formula to get x_coordinates
 2 years ago

IsTim Group TitleBest ResponseYou've already chosen the best response.0
That's what I think did, but I got the answer wrong.
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.1
check your computation of quadratic formula...the above function gives correct xvalues...1.197, 1.53
 2 years ago

IsTim Group TitleBest ResponseYou've already chosen the best response.0
Well. Here's what I did and results: Found dy/dx=6x^22x8. Factored out 2 so 0=2(3x^2x4) Oh, didn't do quadratics. Slip of the mind, sorry. Factored the equation so x=4/3 amd x=1.
 2 years ago

dumbcow Group TitleBest ResponseYou've already chosen the best response.1
oh i see...the only part that is wrong is you assumed it equaled 0 but RHS should be 3 6x^2 2x 8 = 3 then factoring out the 2 doesn't really help
 2 years ago

IsTim Group TitleBest ResponseYou've already chosen the best response.0
Ok. I'll try that. Thanks. I'll Be off for 15 minutes.
 2 years ago
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