Question

If y=x3+2x and dxdt=5, how do you find dydt when x=2 ?

Answer 1

HEY BUDDY....HERE'S YOUR ANSWER....

$y = x {}^{3} + 2x$

$y = (2) {}^{3} + 2(2)$

y=8+4

y=12

Next,dxdt=5

ddt=5/x

ddt=5/2

So,dydt=y×ddt

=12×(5/2)

=6×5

=30

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