Question

Solve this question.

Answer 1

Hii...

Here's your answer ..

x=2t²+ 3t + 4

So,
dx/dt= 4t + 3

Hence at t=4sec
dx/dt =4(4)+3
=19

_______________

Hope this helps!

Answer 2

[0010001111]... Hello User... [1001010101]
Here's your answer...

x = 2t² + 3t + 4

$when \: y = {x}^{n} \\ \frac{dy}{dx} = n {x}^{n - 1}$

$\frac{dx}{dt} = {2 \times 2t}^{2 - 1} + 3 \times {t}^{1 - 1} \\ = 4t + 3$
At t = 4...
$\frac{dx}{dt} = 4 \times 4 + 3 = 19$
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