![]() ![]() So, to sum this up, you can add subscripts and superscripts to the "sum" symbol by using the "_" and "^" characters. First make sure that numlock is on, Then press and hold the ALT key, While keeping ALT key pressed type the code for the symbol that you want and release the ALT key. If there happen to be NA values in the vector, you can use na. The superscript, #2#, is added by using the "^" character. The following code shows how to sum the values in a vector: create vector x <- c (3, 6, 7, 12, 15) sum values in vector sum (x) 1 43. In this example, the subscript, #i=-2#, is added by using the "_" character and parentheses. Now, you can add subscripts and superscripts to the "sum" symbol by using the "_" and "^" characters. + 21 can be wriiten using the summation notation. I admit that the \raisebox factor calculation is a bit sketchy as it uses the text style \sum symbol for the calculation but for cmr it's a good fit. It does take an optional argument to give another factor. ![]() Press and hold the Alt key on your keyboard. This is written using a Greek letter called sigma and is written as. The command sum resizes the \sum symbol by the factor 1.4 (fits OP's fraction). Microsoft Word Unicode Shortcut: The shortcut to make the Summation symbol in MS Word is 2211, Alt + X. And to type the Symbol for Summation with this shortcut, simply press and hold the Option key on your Mac keyboard then press and release the W key. Now, the thing to remember about the summation symbol is that although you can use capital sigma, "Sigma", which gives you #Sigma#, it's better to go for "sum", which gives you #sum#. Summation symbol Alt Code Place the insertion pointer where you need to type the Summation symbol. Find Sum Symbol stock images in HD and millions of other royalty-free stock photos, 3D objects, illustrations and vectors in the Shutterstock collection. Mac Shortcut Method: The Mac Keyboard shortcut for the Summation sign is Option + W. ![]() To expand a little on the answer given by Acquaintance, the summation symbol, which as far as I know is capital sigma, #sum#, not capital delta, #Delta#, works exactly as any other character, i.e. ![]()
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