- #1
Niaboc67
- 249
- 3
Homework Statement
a. k(t) = (sqrt(t+1))/(2t+1)b. y = (3^(x^2+1))(ln(2))
The Attempt at a Solution
For the first problem, I know I use the quotient rule for derivatives (L)(DH)-(H)(DL)/((L)^2)
which would go to: ((2t+1)(1/(2sqrt(t+1)) - (sqrt(t+1))(2))/((2t+1)^2) I get stuck here, maybe it's the algebra but I don't know how to factor all this down to get a solution.
For the second problem I was able to get the answer online but I don't understand the answer.
It goes:
y = (3^(x^2+1))(ln(2))
refine y = e^((ln(3))(x^2+1)) ln(2)
y' = [2xln(3)ln(2)]3^(x^2+1)
I don't understand where the e or ln(3) comes from. Or why it's put as an exponent. Also, why does the ln(2) stay stationary? Then e disappears as x^2+1 is broken into its derivative, the ln(3) comes down while 3^(x^2+1) is still put on the side. Could someone please explain this process works.
Thank you