If u = 3t⁴ - 5t³ +2t² - 18t + 4, find du/dt at t= 1.
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Answered by
3
u = 3t⁴ - 5t³ +2t² - 18t + 4.
=) du/dt = d/dt ( 3t⁴ - 5t³ +2t² - 18t + 4)
= d/dt (3t⁴) - d/dt (5t³) + d/dt (2t²) - d/dt (18t) + d/dt (4)
= 3*4t³ - 5*3t² + 2*2t - 18 + 0
= 12t³ - 15t² + 4t - 18
At t = 1,
= 12(1)³ - 15(1)² + 4(1) - 18
= 12 - 15 + 4 - 18
= - 17.
Answered by
6
Given :
Put t = 1 in the above equation :
The value is - 17 .
EXPLANATION :
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