Tuesday, July 2, 2013

please help me solve for r

Without the value of P(2) we can only say... 
P%282%29=+2500%2F+%281%2B%2821.73%29e%5E%28-2r%29%29 

1%2B%2821.73%29e%5E%28-2r%29=+2500%2FP%282%29+ 

%2821.73%29e%5E%28-2r%29=+2500%2FP%282%29-1+ 


e%5E%28-2r%29=+%282500%2FP%282%29-1%29%2F21.73+ 

ln%28e%5E%28-2r%29%29=+ln%28%282500%2FP%282%29-1%29%2F21.73%29+ 

r=+%28-1%2F2%29ln%28%282500%2FP%282%29-1%29%2F21.73%29+
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