I need help on these problems. Thanks a lot.

1. y= ln squareroot 1 + t^2

2a. y= s/(1+2s)

2b. y= e^-u cos u

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- Oct 26th 2008, 03:18 PMjsu03differentiation rules #1
I need help on these problems. Thanks a lot.

1. y= ln squareroot 1 + t^2

2a. y= s/(1+2s)

2b. y= e^-u cos u - Oct 26th 2008, 03:56 PMskeeter
1.

**y= ln squareroot 1 + t^2**

2a.**y= s/(1+2s)**

use the quotient rule

2b.**y= e^-u cos u**

use the product rule and chain rule