How to type logarithmic functions into Desmos graphing calculator?

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Does anyone know how to type logarithmic functions into Desmos graphing calculator (https://www.desmos.com/calculator) ?

I need to type a function, in which y equals to logorithm of 10 with the base of 5.

I tried:

y = log (5) x and y = log 5 (x), but neither one works.

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Here it is. Just click on the “functions” tab on the right hand side of the panel and scroll down.

EDIT FOR CLARITY: enter image description here Look at the text box closely. First up, the cursor is positioned in the region where you want the base to be. So after clicking the $log_a$ button, immediately type 5 (if the cursor moves, click in the lower region between “log” and “(“.) Then click inside the brackets to put the argument in. The final thing is:enter image description here