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Mathematics 8 Online
OpenStudy (luigi0210):

Another integration question

OpenStudy (luigi0210):

\[\int\limits \frac{ 2x-3 }{ (3x-1)(x+4)(x+5) } \]

OpenStudy (jhannybean):

partial fractions*

OpenStudy (luigi0210):

Shoot Jhan :)

OpenStudy (jhannybean):

\[2x-3 = A(x+4)(x+5)+B(3x-1)(x+5)+C(3x-1)(x+4)\]

OpenStudy (luigi0210):

btw, it'll be a bit messy :P

OpenStudy (jhannybean):

\[x=\frac{1}{3}\]\[2(\frac{1}{3})-3 = \frac{208}{9}A\]\[-\frac{7}{3}= \frac{208}{9}A\]\[A= \frac{\cancel{9}3}{208}\cdot (-\frac{7}{\cancel3})= -\frac{21}{208}\]

OpenStudy (jhannybean):

\[x=-4\]\[-13B = -11 \implies B=\frac{11}{13}\]

OpenStudy (luigi0210):

What did you do there?

OpenStudy (jhannybean):

\[x=-5\]\[16C= -13 \implies -\frac{13}{16}=C\]

OpenStudy (anonymous):

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