Question

At which points is the tangent line to the curve 8x^2 +2y^2=6xy+ 14 vertical?

Answer 1

When the first derivative is undefined.

Answer 2

oh so differentiate and set =to 0?

Answer 3

i use implicit differentioan right?

Answer 4

Differentiate, solve for y' and see what value of x makes the denominator undefined.

Answer 5

differentiated and got dy/dx=(6xy-16x)/4xy-4x is that right?

Answer 6

Wolf says:
\[y'=\frac{8x-3y}{3x-2y}\]

Answer 7

ooh wolfram thing is that free?

Answer 8

Yes. There is a free one and you can get calculus ones for 3 or 4 bucks.

Answer 9

www.wolframalpha.com