Converting to parametric form?
I have a question here that Im trying to figure out, but Im having a little difficulty converting the equation into parametric form.
The question is...
"Find a unit vector perpendicular to the curve x^2+2*y^2=57 at the point (-5,-4)."
Im unsure of how to go about starting this.
Any help would be great
- Anonymous1 decade agoFavorite Answer
first diffrentiate the function and find dy/dx which will be the slope of the tangent.substitute (-5,-4) in dy/dx.let it be m.
now -1/m will be the slope of normal.so the equation will be
y=-x/m+c.again substitute (-5,-4) in the equation to find c.
this way u get the equation of normal.
now coefficient of x and y can be assumed as the direction ratios.
using it you can find u can find a unit vector.