Apple 1.1.2 - page 28

Or you can use the +/- before entering the number:

Press 1

Press 0

Press x

Press +/-

Press 2

Press =

When employing the % key, you do not need to press equals

key, just the operator key eg 100+20% will give 120. 200 x

20% will give 40.

The C key will totally clear the calculator. The running total is

always remembered until the C key is pressed. eg if you enter

15+2=17 then press 12+ the answer will be 29.

You can use the delete key to backspace one character.

The trig and log functions are applied by pressing the relevant

key after you've entered the number. To obtain their inverses,

hold down the option key and press the relevant arc key. The trig

function will return the correct result for the selected trig mode,

degrees, radians or gradients.

The M+ key will add the number displayed into the memory. The

MR key will recall the memory and show it in the display.

Hidden functions

To obtain further functions press and hold down the option key.

In general, the function obtained is the inverse of the normal one

so sin (sine) becomes asin (arcsine)

cos (cosine) becomes acos (arccosine)

tan (tangent) becomes atan (arctangent)

log (base 10) becomes 10x(anti-log base 10)

log natural (ln) becomes ex

Ã (square root) becomes x2

The M+ key becomes the M- key, subtracting the displayed value

from the memory, and MR becomes CM, clearing the memory if

the value in memory is other than zero.

The C key becomes CE, which will clear the last entry, but not

totally clear the calculator ie iMalc remembers any calculation total.

The two keys that have new functions are the % which becomes

¹(pi), and +/- which becomes 1

Úx.

iMalc Manual

Calculator Operation