When integrating iPart(x) dx over [0,4.5] I get 8.25, which is 0.25 over the correct value! Is there a way I can improve accuracy for integrals of functions with jump discontinuities? What numerical integration algorithm is used on this calculator? Interestingly enough, the TI89 also integrates this to 8.25, but the TI84 Plus CE gets a much accurate value (8.00001794).
'True' or 'false' can occur when both sides of the equation are equal: solve(x+y=y+x,x). Of course this is not always obvious: solve(sin(x)=cos(x-pi/2),x).
There are several ways. In the Calculator Application you can use Actions > Delete Variable or simply type DELVAR and then either type the variables names you want to delete, each separated by a comma or select them from the variable menu [VAR] key. So to just delete f(x) ... delvar f
if use the confidence interval command on the cas, it defines heaps of junk variables that clutter my variable list. How do I remove all of those junk variables at once without typing them all out separated by a comma?
Given the question relates to statistics, most of the variables will start with "stat..." Start with the delete variable command, then type stat. (the variable list will be displayed, press ESC ... then press ENTER and all the stat. variables will be deleted. Example: delvar stat. (make sure you include the 'period' or 'decimal place' after stat.
When integrating iPart(x) dx over [0,4.5] I get 8.25, which is 0.25 over the correct value! Is there a way I can improve accuracy for integrals of functions with jump discontinuities? What numerical integration algorithm is used on this calculator? Interestingly enough, the TI89 also integrates this to 8.25, but the TI84 Plus CE gets a much accurate value (8.00001794).
why is my solve resulting in a false or a true answer instead of a solution?is there a way to fix this?
'True' or 'false' can occur when both sides of the equation are equal: solve(x+y=y+x,x). Of course this is not always obvious: solve(sin(x)=cos(x-pi/2),x).
Say I wanted to delete a function, like f(x), how would I do that?
There are several ways. In the Calculator Application you can use Actions > Delete Variable or simply type DELVAR and then either type the variables names you want to delete, each separated by a comma or select them from the variable menu [VAR] key.
So to just delete f(x) ... delvar f
if use the confidence interval command on the cas, it defines heaps of junk variables that clutter my variable list. How do I remove all of those junk variables at once without typing them all out separated by a comma?
Given the question relates to statistics, most of the variables will start with "stat..." Start with the delete variable command, then type stat. (the variable list will be displayed, press ESC ... then press ENTER and all the stat. variables will be deleted.
Example: delvar stat. (make sure you include the 'period' or 'decimal place' after stat.