ERR:SYNTAX when I try to graph 4 times square root of X I get ERR:SYNTAX no matter how I try to change it around

Error syntax mean that the command contains a syntax error. Look for misplaced functions, arguments, parentheses, or commas

You have a syntax error in the function you're trying to graph. Could you post the function in question?

You can use the square-root function for any number, whether it's a perfect square or not. For example, to calculate the square root of 2, press SHIFT [square-root] 2 EXE .

[square-root] is on the x^2 key, just to the right of the ALPHA key.

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].

y=x2-4x+3
here,a=1(coefficient of x2)
b=-4(coefficient of x)
c=3(the constant term)
as this is a quadratic equation this will have two solutions
solution 1=(-b+square root of(b2-4ac))/2a
=(-(-4)+square root of(16-4*a*c)/2*1
=3
solution 2=(-b-square root of(b2-4ac))/2a
=1

Use the (-) key next to the decimal point key to enter the negative sign, not the - key. The (-) key is for negative values, the - key is for subtracting one value from another.

Simply press the (-) key before entering a negative number, in the same place you see the negative sign in print.

For example, to multiply 3 by -4, press 3 x (-) 4 ENTER

Try rewriting your equations in the equivalent forms that follow.
Y1=3-X
Y2=(1-X)/3

If you do not get a syntax error it means that you were not using the correct minus sign.
If the - is the first symbol after the equal sign you must use negation (-) or change sign key.
Similarly, after the division / key you must use the negation or change sign (-)

Press the 2nd Button then the ZOOM button. Make sure that AxesOn is highlighted. If not, move your cursor down until you on AxesOn and press ENTER.

If AxesOn is highlighted, then it is probably your window. Press ZOOM, then 6.

Ok i had the same problem- If i remember correctly my "window" was messed up. Check it out... If not i always pull the "take batteries out while on" trick which resets the ram.