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Sum equation problemHi everyone. I have an equation to solve - don't know how to proceed. $\displaystyle \sum_{i=0}^n(1.1*x)^n=y$ x and y are known values. I need to figure out the value of n. Any tips out there? :) Thanks |

Quote:
solving this should be pretty straightforward now. |

Thanks Romsek ! I can now extract n with a logx. Easy. |

Conversely, what about if I am interesting in figure out what is the value of x, knowing all the other variables? This is equivalent to the following: let's say I have : $\displaystyle x^0+x^1+x²+x³=17$ How can I calculate x? If I use the same above formula, I have an equation with x^(n+1)+ax+c. Thanks! |

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