## 1.5.16 Mathematical Notation in Notebooks

If you use the notebook front end for Mathematica, then you can enter some of the operations discussed in this section in special ways.

 Sum[f, {i, , }] sum Product[f, {i, , }] product Integrate[f, x] indefinite integral Integrate[f, {x, , }] definite integral D[f, x] partial derivative D[f, x, y] multivariate partial derivative

Special and ordinary ways to enter mathematical operations in notebooks.
 This shows part of the standard palette for entering mathematical operations. When you press a button in the palette, the form shown in the button is inserted into your notebook, with the black square replaced by whatever you had selected in the notebook.

 sum summation sign prod product sign int integral sign dd special differential for use in integrals pd partial derivative _ or - move to the subscript position or lower limit of an integral ^ or 6 move to the superscript position or upper limit of an integral + or = move to the underscript position or lower limit of a sum or product & or 7 move to the overscript position or upper limit of a sum or product % or 5 switch between upper and lower positions (Control-Space) return from upper or lower positions

Ways to enter special notations on a standard English-language keyboard.
You can enter an integral like this. Be sure to use the special differential entered as dd, not just an ordinary d.
 In[1]:=  xn x
 Out[1]=
Here is the actual key sequence you type to get the input.
 In[2]:=  intx^n ddx
 Out[2]=

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