This might be a little late, but incredible help for my midterm. One thing I noticed is at 22:05 timestamp the second parameter of T'(t) is wrong: (-2t^2 + sqrt(2))/(t^2 + 1)^2 instead I believe it should have been sqrt(2) * (-t^2 + 1) / (t^2 + 1)^2 given that the derivative would simplify to (sqrt(2) * t^2 + sqrt(2) - 2sqrt(2) *t^2)/(t^2 + 1)^2
at 13:30 , u've gotta show ur workings and explain clearly how you got the "5". cuz I had a hard time calculating it! and u cant just assume the people watching are as good and as quick as you finding ll r' ll = 5 .
This might be a little late, but incredible help for my midterm. One thing I noticed is at 22:05 timestamp the second parameter of T'(t) is wrong: (-2t^2 + sqrt(2))/(t^2 + 1)^2 instead I believe it should have been sqrt(2) * (-t^2 + 1) / (t^2 + 1)^2 given that the derivative would simplify to (sqrt(2) * t^2 + sqrt(2) - 2sqrt(2) *t^2)/(t^2 + 1)^2
I second this. I am thankful regardless.
This teacher is the best honestly
Coming back after 2 months of posting this comment, I can finally say I am officially done with my calc 3 final. Thank you so much, I really mean it
you explain subjects awesomely.. well done bravo dear lady
Legendary,thx for ur work
Hi
How can we show tangent unit victor and unit normal victor are othognal?
Many thanks
you can do the dot product of both vectors and if it is equal to 0 they are orthogonal
start with || T(t) || = 1
31:47 I dont understand how we got r vector (t) :(, would really appreciate if I could get some explanation to it
at 13:30 , u've gotta show ur workings and explain clearly how you got the "5". cuz I had a hard time calculating it! and u cant just assume the people watching are as good and as quick as you finding ll r' ll = 5 .
The value for 2/5^3/2) is incorrect, its not 0.018 but 0.1788