document.write( "Question 989720: Could you rearange this formula to solve I and also rearange it to solve N
\n" ); document.write( "I can't find it out.\r
\n" ); document.write( "\n" ); document.write( "FV = PV * ( 1 + I ) ^ N\r
\n" ); document.write( "\n" ); document.write( "where
\n" ); document.write( "FV =future value
\n" ); document.write( "PV =present value
\n" ); document.write( "I =interest rate
\n" ); document.write( "N =periods\r
\n" ); document.write( "\n" ); document.write( "Thank you very much
\n" ); document.write( "Alain \n" ); document.write( "
Algebra.Com's Answer #609959 by rothauserc(4718)\"\" \"About 
You can put this solution on YOUR website!
FV = PV * ( 1 + I ) ^ N
\n" ); document.write( "1) solve for I
\n" ); document.write( "divide both sides of = by PV
\n" ); document.write( "( 1 + I ) ^ N = FV / PV
\n" ); document.write( "take the Nth root of both sides of =
\n" ); document.write( "1 + I = ( FV / PV ) ^ (1 / N )
\n" ); document.write( "subtract 1 from both sides of =
\n" ); document.write( "I = ( ( FV / PV ) ^ (1 / N ) ) - 1
\n" ); document.write( "2) solve for N
\n" ); document.write( "divide both sides of = by PV
\n" ); document.write( "use definition of logarithm - log base a of X = N means a ^ N = X
\n" ); document.write( "N = log base (I + 1) of ( FV / PV )
\n" ); document.write( " \n" ); document.write( "
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