Henry G.

# Let u(t)=6t^3i+(t^2-4)j-2k. Compute the derivative of the following function.

u(t^4-2t)

im trying to find (i'm kind of guessing at this point) f(t),f'(t), u(t), u'(t).

f(t)=(t^4-2t) u(t)=6t^3i+(t^2-4)j-2k

f'(t)= 4t^3-2 u'(t)=18t^2+2t

I'm totally lost at this part.

Any help would be much appreciated!

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