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After finding 2 roots of an equation, I was asked to type a function to show the "number of real roots". What would that function be?
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I am having trouble finding the average of a sum.
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Up until recently, I've been able to use a period when using the Sum Function as in the days of Lotus. Now it won't accept the period and gives me a #Field! error. I went to Options-Advanced to ensure Lotus compatibility was checked....still nothing.....using a colon requires a Shift+Colon vs just a period....thoughts?
=sum(A1.A2) vs. =sum(A1:A2)
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23. Calculate the internal rate of return in C26 using the IRR function, using profit for the entire time period (including startup and project end).
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Finding the percentage problem. I need the formulae for finding the percentage of students in the subjects
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