An ordinary calculator inputs a calculation element (numerical value) and an operator, and finally an equal "=" is pressed to calculate an answer,

but this application inversely calculates the calculation element from the answer.

Of course, you can calculate commonly with numbers and operators like an ordinary calculator, but since the values entered are automatically replaced by variables internally, you can recalculate later by changing the value later, It is also possible to decide the answer first and backwardly compute one element in the calculation formula.！ Wow

Machine design, electric design, construction, chemistry .... Loan calculation, Distribution calculation application is infinite.

There are no restrictions on the number and name of the variables to be constructed, but the following restrictions apply.

1. 1.Even if variables with the same name exist in more than one place, they are managed
   

　in a single way. (From V1.20)

　However, it is not possible to reverse calculation object.

2. The multiplier can not be a variable.

3. 3.Expressions with multiple solutions can not be analyzed.
   

There is a reserved word that constitutes an expression, and the following can not be a variable name.

SIN, COS, TAN, PAI, ASIN, ACOS, ATAN, LOG, SQRT, PAI

Disclaimer: The author and the stakeholders do not take any responsibility in the

　　　　　　calculation result etc. of this program

　　　　　　Please perform sufficient verification separately.