Equation Step-By-Step Calculator app for iPhone and iPad

The equations calculator offline (equation solver) contains the section:

This calculator return only answer, but return detail step by step solution for
[*] A quadratic equations
[*] A simplest trigonometric equations
[*] A equation with a module (for example, |x + 1| + |x^2 – 7| = 20)

The Supported:
[*] Supported all math symbols and functions. For example: sin(x), cos(x), exp(x), tan(x), ctan(x) and other.
[*] Suported complex variables (solve complex equations)

Solve any equation types, such as:
[*] linear equations
[*] square (quatratic) and cubic equations
[*] polynomial equations
[*] trigonometric equations
[*] exponential equations
[*] logarithmic equations
[*] equations with complex numbers
[*] and other

The Calculator contain some features:
[*] Numeric solutions for unsolvable equations (such as cos(x) = x^3 - x + 2)
[*] Some examples
[*] Сorrect input expression errors (for example, you enter x^2-x+1/x - 1=0 or e^-x^2=5)