$$\text { Find the derivative of } y \text { with respect to } x , t , \text { or } \theta \text {, as appropriate. }$$
-$$y = e ^ { 5 - 4 x }$$
A) $e ^ { - 4 }$
B) $- 4 \ln ( 5 - 4 \mathrm { x } )$
C) $5 \mathrm { e } ^ { 5 - 4 \mathrm { x } }$
D) $- 4 \mathrm { e } ^ { 5 - 4 \mathrm { x } }$

Question

Quizplus · Accepted Answer

Using the chain rule, we have 
$$\frac{dy}{dx} = e^{5-4x} \cdot (-4) = -4e^{5-4x}$$
Therefore, the answer is D.

Find the derivative of y with respect to x,t, or θ, as appropriate. \text { Find the derivative of } y \text { with respect to } x , t , \text { or } \theta \text {, as appropriate. } Find the derivative of y with respect to x,t, or θ, as appropriate.

$\text { Find the derivative of } y \text { with respect to } x , t , \text { or } \theta \text {, as appropriate. }$