Type log(x) for common log and ln(x) for natural log. Change of base is log(a) / log(b) if the item uses another base. Desmos access is in Desmos on the ACT.
Solve by graphing
Graph y = log(x) and y = a constant, then click the intersection, in finding intersections. Exponentials are the inverse picture, in exponentials in Desmos.
Domain of a log starts after zero. Restrictions are typed in braces, in domain restrictions.
The bottom line
log and ln are keypad functions. Other bases: divide the logs.
Start practicing
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