Functional Reactive Calculator

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2nd order polynomial solver

x²

+

x

+

Δ = b² - 4ac = ?
Solution(s): ?

Calculator

Once properly implemented, this calculator can compute values of variables depending on other variables.

Only very simple expressions are valid, here. It can be one of:

• A number
• The name of a variable (from 'a' to 'j')
• An expression of the form '<expr> <op> <expr>' where <expr> is a number or a variable name, and <op> is one of + - * /
  Note that spaces are important, and that there cannot be more than one operation per cell.

Any error, such as a malformed expression, or cyclic references between variables, will result in NaN (Not-a-Number).

a =

= ?

b =

= ?

c =

= ?

d =

= ?

e =

= ?

f =

= ?

g =

= ?

h =

= ?

i =

= ?

j =

= ?