If you draw the tangent line at x = 2.8 it would appear that line would be horizontal. What is the slope of a horizontal line?
ALright i am stuck on this question, a friend told me to simply draw a line at that point and figure the slope from that, however the answer im getting itsnt working, so heres the question
Using graphical methods, determine at x= 2.8 the value of the derivative of function F(x) plotted in the graph below.
also as a side note, i placed this in the calc forum because the question mentions derivative, if this is the wrong place please let me know.
Just as a ballpark approximation the tangent line seems to contain the points (2.8,11) and (-4,-3)
as a crude approx f ' (2.8) = [11-(-3)]/[2.8 - (-4)] = 2.06 = 2 to the nearest whole number
I simply laid a straightedge along the graph and identified 2 pts