How to store equation and then recall it later

You cannot store permanently formulas. You can enter an equation to solve (In Equation mode). You can use the same equation again with different values but if you exit the EQAtion mode or turn off the calculator it will evaporate.

Which of the following equations? What following equations?

• You have several memory locations you can use to store values in them. The memory locations are A,B,C,D, M, X, and Y. You use [SHIFT][RCL] and one of the variable names above. Example store 78 in C location: 78 [SHIFT] [RCL] [HYP]. To recall that value press [RCL] [HYP]

• If you want to use the EQN (equation solving mode, press [MODE][5:EQN] then select the equation type . For example [3:aX^2+bX+c=0] will display a template wher you input the three coefficients.

• You can also enter any type of equation and solve it with the SOLVE command. In that case you use the keyboard to enter the expression (see above how to enter variable name X). To type in the equal sign (=) use [ALPHA][ CALC]. Once the whole equation is typed in, press [SHIFT[ [SOLVE], and the calculator will prompt SOLVE for X? Confirm and press the main = sign. Press = again to get a second, a third root (if any)

Here's the relevant instructions out of the manual.
Storing and recalling broadcast frequencies You can easily store up to six broadcast frequencies for later recall. ! Six stations for each band can be stored in memory. 1 Press LIST. Preset screen is displayed. 2 Use MULTI-CONTROL to store the selected frequency in memory. Turn to change the preset number. Press and hold to store. # You can also store the frequency in memory by pushing and holding MULTI-CONTROL right. 3 Use MULTI-CONTROL to select the desired station. Turn to change the station. Press to select. # You can also change the station by pushing MULTI-CONTROL up or down. # To return to the ordinary display, press BAND/ESC or LIST. # If you do not operate the list within about 30 seconds, the display automatically returns to the ordinary display.
You can find the full manual here: http://www.pioneerelectronics.com/StaticFiles/PUSA/Files/DEHP4000UBOperationManual1019.pdf

The regression equation can be copied automatically in a Yx variable. You need not enter it manually(?).
Example: Suppose you are performing a quadratic regression on data stored in L1 and L2.

1. From the [Stat][

Here is the info, for a link to the user manual go here for all the functions

http://www.fixya.com/support/p920294-pioneer_deh_p4000ub_cd_player/manual-26899

Storing and recalling broadcast frequencies You can easily store up to six broadcast fre- quencies for later recall. ! Six stations for each band can be stored in memory. 1 Press LIST. Preset screen is displayed. 2 Use MULTI-CONTROL to store the se- lected frequency in memory. Turn to change the preset number. Press and hold to store. # You can also store the frequency in memory by pushing and holding MULTI-CONTROL right. 3 Use MULTI-CONTROL to select the de- sired station. Turn to change the station. Press to select. # You can also change the station by pushing MULTI-CONTROL up or down. # To return to the ordinary display, press BAND/ESC or LIST. # If you do not operate the list within about 30 seconds, the display automatically returns to the ordinary display

Hi,

MR is Memory Recall
MC is Memory Clear
M+ is Memory add
M- is Memory subtract

These are used to add and subtract the answers to multi-step equations so you can do the small steps with the calculator, then store, change or recall the total as needed. You might add a long string of numbers in groups this way. Or you can do all operations in one parenthesis, then just store the total of each.

A good problem to illustrate this would be : (123 x 3) + (55 - 24) + (10^2) - (7 x 8) = ???
Using MR, M+ and M-, you can do each one as a group, and only store the answers. 123 x 3 = 369 so M+ to put 369 in memory. Clear it from the calculator. 55 - 24 = 31, so M+ to put this in memory and add to the 369 already there. Clear it from the calculator. 10^2 = 100, so M+ this to memory also to add it. Clear it from the calculator. 7 x 8 = 56 so M- this to SUBTRACT it from memory. Clear it from the calculator if desired. Now, when you then hit MR, you will get the total of all of these small equations in parenthesis -- 444.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Too Much $$$ I Dont Know of recalls But I Do Need The CODE that ECM Has Stored to Help You Find a Less Expensive Repair

No. There is however a function to store 4 "registration" settings for easy recall, in case you want to change sounds in the middle of a song. Those settings are erased when the keyboard is turned off.

Hope this helps!

The STO> button just above the on/off button is your memory store initializer.
example: 2x + 53 STO> y
stores "2x + 53" in a variable named "y".
To recall, just hit y and enter. In fact, if you type an equation like 3y^2 - 4y it will insert the data in for every "y" and give you:
(2x + 53)(6x + 155) as an answer.
To clear the memory:
DelVar y or F6 (2nd+F1) and clear all w/ single character names.
To recall a prevous answer, 2nd+(-) or type ans(1) for the last answer. You can also type ans(2) for the 2nd to last answer & so on.