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www.automateexcel.com/functions/slope-formula-excel

The SLOPE function in Excel is used to calculate the slope of a line given known x and y values. The SLOPE function can be used in conjunction with the INTERCEPT function to find the equation of a linear line,

www.excelfunctions.net/excel-linest-function.html

The Excel Linest Function uses the least squares method to calculate the line of best fit through a supplied set of y- and x- values. If there is a single range of x-values, the calculated line satisfies the simple straight line equation:

ms-office.wonderhowto.com/how-to/create-tangent-line-with-excel-424513

Given a function, you can easily find the slope of a tangent line using Microsoft Excel to do the dirty work. That is to say, you can input your x-value, create a couple of formulas, and have Excel calculate the secant value of the tangent slope. This is a fantastic tool for Stewart Calculus sections 2.1 and 2.2.

www.tessshebaylo.com/how-to-calculate-the-equation-of-a-line-in-excel

Excel equation of a straight line find the trendline in how to make fit using 8 steps with pictures calculate slope 9 basics linear regression finding y intercept 4 ways and intercepts wikihow least squares. Excel Equation Of A Straight Line. Find The Equation Of A Trendline In Excel.

I want to take the equation of a line of best fit from a graph and use it in a calculation. How do I do this? I have seen it done. Imagine I have a linear relationship, e.g. the race times of an athlete against their distances. I get an equation for this graph using Excel.

www.excelfunctions.net/excel-trend-function.html

Equation for a Straight Line. The Excel Trend Function finds the linear trend by using the least squares method to calculate the line of best fit for a supplied set of y- and x- values. If there is a single range of x-values, the calculated line satisfies the simple straight line equation:

Take the log of the above equation to get ln =ln(c)+b*ln(x). This is a linear equation! So, LINEST will give you ln(c) as the intercept and b as the slope. Suppose your x and y values are in columns A and B. Then, in C and D, calculate LN() of the cells in columns A and B respectively.

Or chose the one that is a close match to the trend in your data. In the trendlines options there is a check box for displaying the equation on the chart. If your data is linear, you can also use the LINEST command to compute the slope and intercept of the best fit line.

engineerexcel.com/nonlinear-curve-fitting-in-excel

So it could be applied to an equation containing log10 or log2 just as easily. Finding the Coefficients of a Best-Fit Exponential Curve. An exponential function has the form: It’s a little trickier to get the coefficients, a and b, for this equation because first we need to do a little algebra to make the equation take on a “linear” form ...

Yes, what joeu2004 says there is key: IF you are copying your polynomial equation from a trendline on an Excel chart (you didn't say you are, but it's probably a reasonable assumption for us to make), make sure you format the equation on the chart to show enough accuracy. In the chart, right-click on the Trendline Label and Format Trendline Label.

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