- #1

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## Homework Statement

Solve the Given initial value problem

## Homework Equations

[tex] y' = tan ( x ), y ( pi / 4 ) = 3 [/tex]

## The Attempt at a Solution

Well I got the answer

[tex] y = sec^2 ( x ) + 5 / 2 [/tex]

The books answer is

[tex] y = 3 - ln (sqrt(2) cos(x) ) [/tex]

Where did I got wrong? Or is the book screwed up?