In order to 'equal' button be enabled, in this case, you should enter denominator of fraction and the power you want raise the sine function in. The button 'equal' will be disable until you enter the correct mathematical expression: So, the only enabled buttons are 'Backspace', 'addtion', 'subtraction', 'multiplication', 'division' and 'power'. Such a situation results from the fact of deletion of multiplication sign and now the only thing we can do is also delete number 7 or enter operation sign. Sometimes, it may happend that almost all buttons in the math input panel are disabled: Now 'Backspace' button is enabled and you can delete the entire sine function, but the button 'move cursor to the right' will be disabled because it (the cursor) is already at the rightmost position. If you want to delete the entire sine function, you should move cursor to the right:

$use math input panel$

In the example above, the 'Backspace' button is disabled because of the cursor at sine argument position and in such a position deletion of the brackets is forbidden (because it is not possible to delete of sine argument without deletion of whole function). To simplify input of mathematical functions in powers, we worked out corresponding buttons:Īfter you complete the input of you mathematical expression, push the button:Īs soon as your skill in using our advanced math input panel increases, you may note that sometimes some buttons are disabled (this depends on what position is cursor at): In order to enter the trigonometric, inverse trigonometric, exponent, logarithm, root or magnitude, use buttons with corresponding notations: To enter parameters, use corresponding buttons: To enter addition, subtraction, multiplication, division and power operations, use buttons: To input the numbers, use buttons with corresponding labels: To clear the entire expression, use the button: To move the cursor to the right or to the left, use corresponding buttons: When you move the cursor to the corresponding key, the hint is poped up:

Use math input panel