From the TI knowledge base and FAQ
How do I correct ERR: MEMORY on a TI-83 family or TI-84 Plus family graphing calculator?
An ERR: MEMORY
is given when there is not enough memory to perform the instruction or
function. To increase available memory by deleting the contents of any
variable (real or complex number, list, matrix, Y= variable, program,
Apps, AppVars, picture, graph database, or string), follow these steps.
• Press [2nd] [MEM] to display the MEMORY menu.
• Press 2: Mem Mgmt/Del.
• Select a variable or data that needs to be deleted and press [ENTER].
•
Use the arrow keys to move the cursor next to the item, and then press
[DEL]. The variable or data should now be deleted from the memory.
When
deleting programs or Apps, a message asking for confirmation will
appear. Select 2:Yes to continue. To leave any variable screen without
deleting anything, press [2nd] [MODE].
Notes:
With the exemption of programs and Apps, no warning will be given to verify the deletion.Some system variables, such as the last-answer variable Ans and the statistical variable RegEQ, cannot be deleted.
Hope it helps.
SOURCE: My TI-84 Plus Silver Edition
You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.
SOURCE: My TI-84 Plus Silver Edition got wet and now the
LOTION GOT ALL IN My TI-84 PLUS AND ITS completely DRY BUT MY CALCULATOR KEEPS FREEZING AND I PUT IN NEW BATTERIES!
SOURCE: ti-84 plus silver edition will not graph
try going into the memory men (2ND - +), and selecting option 2. Delete some stuff you know you don't need. If the problem persists, 2ND - +, this time option 7. Reset the defaults. You won't lose anything, it will just reset the settings that may be causing this issue.
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