L lukasz New member Joined Oct 19, 2008 Messages 9 Oct 20, 2008 #1 what is the magnitude of r'(t) r(t) = 3costi+4sintj+1/2tk r'(t) = -3sinti + 4costj+1/2k ||r'(t)||= ? I have to find T(t) = r'(t)/ ||r'(t)||
what is the magnitude of r'(t) r(t) = 3costi+4sintj+1/2tk r'(t) = -3sinti + 4costj+1/2k ||r'(t)||= ? I have to find T(t) = r'(t)/ ||r'(t)||
D Deleted member 4993 Guest Oct 20, 2008 #2 Re: CAlculus 3 Magnitude Please help lukasz said: what is the magnitude of r'(t) r(t) = 3costi+4sintj+1/2tk r'(t) = -3sinti + 4costj+1/2k ||r'(t)||= ? I have to find T(t) = r'(t)/ ||r'(t)|| Click to expand... If we have vector V = A i + B j + C k then ||V|| = [A[sup:4st23k7h]2[/sup:4st23k7h] + B[sup:4st23k7h]2[/sup:4st23k7h] + C[sup:4st23k7h]2[/sup:4st23k7h]][sup:4st23k7h](1/2)[/sup:4st23k7h]
Re: CAlculus 3 Magnitude Please help lukasz said: what is the magnitude of r'(t) r(t) = 3costi+4sintj+1/2tk r'(t) = -3sinti + 4costj+1/2k ||r'(t)||= ? I have to find T(t) = r'(t)/ ||r'(t)|| Click to expand... If we have vector V = A i + B j + C k then ||V|| = [A[sup:4st23k7h]2[/sup:4st23k7h] + B[sup:4st23k7h]2[/sup:4st23k7h] + C[sup:4st23k7h]2[/sup:4st23k7h]][sup:4st23k7h](1/2)[/sup:4st23k7h]
