I need help graphings this in Excel, I am not getting the right best fit line...
I need help graphings this in Excel, I am not getting the right best fit line equation.
It needs to be cell voltage (Ecell) as a function of Log[Cu+2]
| Ecell | Log(Cu+2) |
| 1.034 | 0 |
| 1.204 | -2 |
| 1.017 | -3 |
| 1.1 | -4 |
| 1.011 | -5 |
| 0.992 | x |
Homework Answers
![Ecell Vs Log[Cu2+] -6 -5 -4 2](http://img.homeworklib.com/questions/8affe400-d104-11ea-ba7a-a586f0c9eb3c.png?x-oss-process=image/resize,w_560)
First, plot the given points in Excel. Then right click on any one of the points and select the add trendline option. Automatically a linear trendline would be added.
Identify the encircled points (in black) in the graph, to find the equation of the line y = mx + C
The encircled points (x,y) are (-5, 1.06) and (0,1.09)
Solving for m and C,
For (0, 1.09) , 1.09 = m(0) + C => C = 1.09
For (-5, 1.06), 1.06 = m(-5) + 1.09 => m = 0.006
Thus, the equation of the line is y = 0.006x + 1.09
Solve, this equation for y = 0.992
0.992 = 0.006(x) + 1.09 => x = -16.34
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I need help graphings this in Excel, I am not getting the right
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explanations.
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questions for me correctly please. Thanks.
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for part a, this is as far as I've gotten. The numbers on the
left are the contents inside the cell and the numbers on the right
are contents outside of the cell. I have converted everything to
mM. H+ is hard to see becuase only 10 um passed through the
membrane to go outside of the cell. (i dont know how to show this
line better on...
i need help getting the answer pls
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getting an error from the r2 line, "Error in xc[1:(n - 2)] : only
0's may be mixed with negative subscripts."
tmpFn <- function(xVec)
{
xc <- xVec - mean(xVec)
denom <- sum(xc^2)
n <- length(x)
r1 <- sum( xc[2:n] * xc[1:(n-1)] )/denom
r2 <- sum( xc[3:n] * xc[1:(n-2)] )/denom
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}
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