implicite differenciation to find slope of curve at apoint
1 次查看(过去 30 天)
显示 更早的评论
Hi,
I would like to do some thing like
x^2+y^2=1
d(x^2+y^2)/dx=d(1)/dx
d(x^2)/dx+d(y^2)/dx=0
2x+2y*dy/dx=0
dy/dx=-x/y
but
syms x y
f=x^2+y^2-1
diff(f,x,y)gives
2y
please help..
Thanks,
Sita
1 个评论
Sung Won Kim
2016-8-18
编辑:Sung Won Kim
2016-8-18
It would be better, If you use this When you defining f f=x^2+y^2==1
and I recommend to use syms x y(x) when you defining syms.
last, it is also necessary that diff(f,x) is used to differenciate the f by x (You don't need 'y')
then I think it will give an ans.
good luck
Kim
回答(1 个)
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!