Click the grey button to change the type. Click the purple button to input the numbers. This one use the base changing formula for logarithms. Logarithm is to calculate the exponent; Antilogarithm is the answer of power; "lb" means the base number is 2; "㏑" means the base number is e; "lg" means the base number is 10; e.g. ㏒₂8=lb8=3 (2³=8) (If you still can't understand or you even can't open it, please tell me in the comment)
Hope this program can solve some Maths problems for you! My second calculator
