PowerSymmetricPolynomial[r] represents a formal power symmetric polynomial with exponent r.PowerSymmetricPolynomial[{r_1, r_2, ...}] represents a multivariate formal power ...

Cubics is an option for functions that involve solving algebraic equations, that specifies whether explicit forms for solutions to cubic equations should be given.

Quartics is an option for functions that involve solving algebraic equations that specifies whether explicit forms for solutions to quartic equations should be given.

NSolve[expr, vars] attempts to find numerical approximations to the solutions of the system expr of equations or inequalities for the variables vars. NSolve[expr, vars, ...

InterpolatingFunction[domain, table] represents an approximate function whose values are found by interpolation.

___(three _characters) or BlankNullSequence[] is a pattern object that can stand for any sequence of zero or more Mathematica expressions. ___h or BlankNullSequence[h] can ...

TransferFunctionZeros[tf] gives a matrix of roots of the numerators in the TransferFunctionModel object tf.

The main equations that Solve and related Mathematica functions deal with are polynomial equations. It is easy to solve a linear equation in  x. One can also solve quadratic ...

Solve[expr, vars] attempts to solve the system expr of equations or inequalities for the variables vars. Solve[expr, vars, dom] solves over the domain dom. Common choices of ...

SameTest is an option whose setting gives a pairwise comparison function to determine whether expressions should be considered the same.