could someone help me
Here, completing the square gives .and this
Again, you can't use partial fractions. Make the substitution instead.
Here is the technique of resolving into partial fractions .
( * the term " 1 + x " exists only for n is odd )
Then , " log " both sides
After that , differentiate both sides ( we call this " Logarithmic Differentiaion ! )
Divide both sides by
ps : you should know what a ,b , c , d ... are . for this case ,