Need help differentiating the following equation:

[Hfuais]

1. I have this equation: y= 2.52e^-0.8472x which I need to differentiate.



2. I am unsure whether to use the product or chain rule>



3. I honestly don't know what to do...
I was thinking 2.52e^u?

 

[NascentOxygen]

I was thinking 2.52e^u?

Yes, let u=-0.8472x is how you could do it.

Then, dy/dx = dy/du * du/dx

 

[Hfuais]

Thanks!