Is there a function that makes a sigmoid look linear ?? (ie how do you flatten a sigmoid) ??
141606
There is an application to convert an AC current to DC.\nAssume that f is a sigmoid function, then integration of\nf^2 over one period gives a constant number which is considered as flattened sigmoid and is analogous with converting AC to DC.
723693
I'm pretty sure you are correct.  I am also working thru Calc III (at the moment, actually).  It helps to picture the gradient as perpendicular to the tangent plane.
271377
Now, if only they would enable the user to input their OWN functions...that would be useful.  \n\nBTW, if anyone knows how to do that, I would surely like to know!
231031
Hopefully this will help you. I can't say I understand it real well, but it is a way to get vertical data to appear horizontal I think.
670024
plano concave\nconvexo concave\nconvergent
150119
Have you tried the ezplot routine?  You can get help from the context help window.  Mathlab is the bomb.
60802
"disp" or "display" functions\n"line" is helpful too\n\nTry to make a string x='*****' y='** **' \ndisp x,y \nETC....
423150
the effect is called Gradient!\n\nUse the help menu to figure it out, i dont have the menus memorized to talk you through it
1802
I haven't tried it, but check out MatPy (linked below).  Another possibility is Numerical Python (also linked below).
665179
The linearization is the equation of the line tangent to f at x=a.\nThe point that L(x) is based on is (a,f(a)), which is (4,√13)\nFind the derivative of the function.\nf'(x) = 2x·[1/2√(x²+9)] = x/√(x²+9)\nf'(4) = 4/√13\nThe linearization:\nL(x) = (4/√13)x - 15/√13
993077
not that I know...you might have to wright your own algorithm!\n\nouch...have fun!\n\nbut check links!!
142496
There are a number of available tools in the following website:\n\nhttp://www.functionx.com/
351583
how about instead of (a+b)^4 you plot (x+y)^4?\n\nit's quite a funny 3D plot.\n\nLooks like a conehead balancing on his head.\n\nSeriously... draw a cone rounded off on the top and then flip the paper upside down and you'll get an approximation of (a+b)^4.
1160851
http://www.citlink.net/~math/geometry/ch1/1-4_notes.pdf#search='segment%20addition%20postulate'
271763
on a graph...when it's 1/2 or 0.5 then graph the point half way between the two lines (between 0 and 1)...if it's 1/3 then split the box into three sections...etc etc.
7772
You can.  Use the mapping (x, y, z) -> x.  Of course, that is a many-to-one mapping, and kind of useless.
1124554
Take a look at this site.\nhttp://www.functionx.com/visualc/index.htm