If D>0, the second derivative test tells us that we either have a local max or a local min -- not a saddle point. At this point, to distinguish between a max and a min, we look at the sign of fxx (or fyy, it doesn't matter). If fxx>0, we have a local min. If fxx
Fantastic explanation! Thank you so much!
great video but i don't understand how you found the value of D?
what do we do if one of the partial derivatives was negative ???
u are da best
explained so well
this was so helpful, thank you
You’re very welcome! Glad it was helpful to you!
Thank you so much..’!!
Excellent explanation, in your 3D graph, you have x, y,.. what is the denomination of the 3rd variable?
The vertical axis represents the value of f(x,y), which is often denoted by z.
Thanks a bunch.
Good explanation
Helpful. Thank you
How can i determin min/max if D>0?? Is there any criteria?? (D=fxxfyy-fxy^2)
If D>0, the second derivative test tells us that we either have a local max or a local min -- not a saddle point. At this point, to distinguish between a max and a min, we look at the sign of fxx (or fyy, it doesn't matter). If fxx>0, we have a local min. If fxx
Good