Scientific Calculator (NHA) is 100% free, ad-free, useful, powerful.

User manual: https://sites.google.com/view/nhagames/user-manual/scientific-calculator

Features:
• No Ad.
• Natural input method: Infix notation, cursor edit,...
• Storable variables.
• Solve Function (Newton's Method).
• Differential, Integration calculations.
• Fraction calculations.
• Percentage calculations (e.g. calculate discount, premium,...)
• Degree, minutes, seconds calculations (e.g. calculate time)
• Complex Numbers Calculator.
• Statistics Calculator:
Standard Deviation.
Regression Calculations: Linear, Logarithmic, Exponential, Power, Inverse, Quadratic.
• Programmer Calculator (Base-n Calculations).
• Equation Calculator: Degree, Unknowns.
• Matrix Calculator.
• Vector Calculator.
• Number format: Normal, Fixed-point, Scientific (Exponential), Engineering Notation.
• And many more features.


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https://www.youtube.com/channel/UChbn4K1hl-oKUmLTUu22iLA