Question

What is the equation of the tangent line to the ellipse x2 -xy + y2 =3 at the point (-1,1)?

Select one:
a. x +2y + 1 = 0
b. x - y + 2 = 0
c. x - y - 1 = 0
d. x - y - 2 = 0

Answer 1

just diff it and find y', put the points and thats the slope

Answer 2

heeelp

Answer 3

differentiation wud be like that 2x-(y+xy') + 2 y.y'=0, now can you separate out y' ?

Answer 4

no?

Answer 5

b

Answer 6

u know what is formula of eq of tangent

Answer 7

@aweejfranciso you know how to differentiate an equation ?

Answer 8

partly..

Answer 9

so u can use it or simplyu can use the values in the eq