Hello,

In my book it shows x=10(sqrt(1+4^4)-1)

I am not sure about the -1 trying to figure out the velocity derivative.

so its 10((1+4^4)^1/2-1)

Is this how it will be written?? never seen it with a -1 at the end after a square root.

So for the derivative it's

5(1-4^4)^-1/2 -1????

Is this correct. just wanting to see if I have it correct before proceeding further.

Thanks

Joanne