Question

Entered Answer Preview Result [7-(1/t)]/[5+(1/t)] frac{7-frac{1}{t}}{5+frac{1}{t}} correct -1 -1 incorrect At least one of the answers above is NOT correct. (1 point) (a) Find $frac{dy}{dx}$ expressed as a function of $t$ for the given the parametric equations: $x = 5t + ln t$ $y = 7t - ln t$ $frac{dy}{dx} = frac{(7-frac{1}{t})}{(5+frac{1}{t})}$ (b) Find $frac{d^2y}{dx^2}$ expressed as a function of $t$. $frac{d^2y}{dx^2} = -1$

          Entered
Answer Preview
Result
[7-(1/t)]/[5+(1/t)]
frac{7-frac{1}{t}}{5+frac{1}{t}}
correct
-1
-1
incorrect
At least one of the answers above is NOT correct.
(1 point) (a) Find $frac{dy}{dx}$ expressed as a function of $t$ for the given the parametric equations:
$x = 5t + ln t$
$y = 7t - ln t$
$frac{dy}{dx} = frac{(7-frac{1}{t})}{(5+frac{1}{t})}$
(b) Find $frac{d^2y}{dx^2}$ expressed as a function of $t$.
$frac{d^2y}{dx^2} = -1$

$Entered Answer Preview Result [7-(1/t)]/[5+(1/t)] frac7-frac1t5+frac1t correct -1 -1 incorrect At least one of the answers above is NOT correct. (1 point) (a) Find fracdydx expressed as a function of t for the given the parametric equations: x = 5t + ln t y = 7t - ln t fracdydx = frac(7-frac1t)(5+frac1t) (b) Find fracd^2ydx^2 expressed as a function of t. fracd^2ydx^2 = -1$

Added by Samantha G.

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