Question

23. If r(t) = 2î - j +2k, when t=2
=4i - 2j + 3k, when t= 3
Then integration of (r•dr/dt)dt over the limits 3 and 2 will be?
(a) O
(b) 5
(c) 10
(d) -9​

Answer 1

Answer:

i do not know ..........

Answer 2

Answer:

the answer of this question is (c) 10.