Question

calculate the length of the curve

Answer 1

\[(x= 2\sin t) (y=5t ) (z=2cost) (-10\le t \le 10)\]

Answer 2

help please

Answer 3

where are you stuck?

Answer 4

i found
(dx/dt)² = 4cos²t
(dy/dt)² = 25
(dz/dt)² = sen²t
is correct?

Answer 5

that last one is suppose to be 4sin^2(t)?

Answer 6

also i will give you a hint for later sin^2(t)+cos^2(t)=1