Best Calculators for Variable

there is no way to enter a generalized equation with multiple variables, such that the user can enter all of the unknowns except one, and have the calculator solve for the remaining variable.

the ability to build algebraic functions around variables and execute them repetitively is also very useful.

one can store formulae in variables f1,- f4, and these may be recalled for rapid analysis of data- such as t-scores and

i used that same calculator all through college, slowly learning the significance of new functions such as complex numbers (useful in electromagnetics) hex and octal conversions (digital logic) three

so i needed a calculator that allowed for matrix reduction, basic vector manipulation, and single variable integration for my engineering class.

while simple math can be done, one cannot take the sine or exponental of a complex variable.

this calculator does some great things: solve 2nd and 3rd degree polynomials (quadratic and cubic equations), solve 2-eq-2-unknowns and 3-eq-3-unknowns (must be in the correct form), solve equations

it also can prompt you for variable inputs instead of storing the variables before you run the program.

this problem involves 4 separate, inter-related equations to be solved, which use 6 or 7 different table constants and a dozen or more intermediate variables.

these equations can be re-executed multiple times with different values for any embedded variables.

drawback: variables are just letters (from a to z), and not words

the only thing i miss from my old, old sharp (the predecessor to this model) is the auto-loading of variables for the formulas.

prompting for variable input is severely restricted--only the numeric input line is available--thus no expressions, only simple numeric literals.

it features entry, editing and storage of formulas, has nine variables for temporary storage, supports 4x4 matrices, numerical integration, hex/octal/binary numbers, metric conversions, complex

i especially like the fact that all the variables are listed out for a given function in a way that you can scroll down to see them, therefore you need not remember the required variables for the

it has 12 modes, each of which lets you calculate a limited number of variables after the input of another set of variables.