mathplus-js (Sorry for too many updates)

This is a JS repository for additional math functions and constants.

Functions and constants explanation

Function or constant	explanation(?)	Parameters
integral(f,a,b,n)	This function uses Gaussian sum. Represents $\int_a^b f(x) dx$.	f: Function to integrate. a: Lower bound for integration. b: Upper bound for integration. n: Intervals to integrate. Default is 200.
derivative(f,a,dx)	This function uses first principle. Represents $\frac{d}{dx} f(x)\ \text{where}\ x=a$.	f: Function to differentiate. a: value for differentiation. dx: Small value (Epsilon or Delta x). Default is 1e-6 (or $1 \times 10^{-6}$).
sumf(f,a,b), prodf(f,a,b)	Summation and Product. Same as the principle and the definition. Represents $\sum\limits_{x=a}^b f(x)$, $\prod\limits_{x=a}^b f(x)$.	-
trig(trigf, angle)	This function calculates advanced trigonometric calculations.	trigf: Advanced trigonometric function. Uses: {'trig': 'sec'} Represents sec, {'trig': 'csc', 'hyp': true} Represents csch. angle: Desired value.
nth_root(value, n)	This function calculates nth roots. Represents $\sqrt[n]{\text{value}}$.	value, n: Desired value.
log_base(a,b)	This function calculates logarithms. Represents $\log_a b$.	a: Base, b: Argument.
phi	This constant returns the golden ratio. Represents $\phi = \frac{1+\sqrt{5}}{2}$.	-
solve(lhs,rhs,x,n,dx)	This function solves equations. Represents $\text{lhs} = \text{rhs}$.	lhs, rhs: Function to solve. x: Deafult value. Deafult is 0.5 (or $\frac{1}{2}$). n: Entries. Default is 500. dx: Small value (Epsilon or Delta x). Default is 1e-6 (or $1 \times 10^{-6}$).
taylor(f,x,a,max,dx)	This function converts the function to taylor series.	f: Function. x: Desired value. a: Initial value. max: Maximum index. dx: Small value (Epsilon or Delta x). Default is 1e-6 (or $1 \times 10^{-6}$).
limit(f,a)	This function calculates limits. Represents $\lim\limits_{x \to a} f(x)$.	f: Function to calculate limit. a: Value.

Errors: An error occurs if you:

• Don't type the expression correctly. It occurs an error It is not an expression.

ETC

README.md file is so weird. (Not that weird.) My Samsung

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