martinheywang / literal-calculator-web Goto Github PK

Examples of the current behaviour :

• 2x (3x + 5) = 6x^2 + 10x ✅
• 2x (3x^2 + 5) = 66x^3 + 10x ❌
• 2x (3a^2 + 5) = 66a^3 + 10x ❌

Expected :

• 2x (3x^2 + 5) = 6x^3 + 10x
• 2x (3a^2 + 5) = 6a^3 + 10x

Unexpected result when reducing: '2|3 + 5|3'

https://martinheywang.github.io/literal-calculator-web/?expression=2%7C3%20%2B%205%7C3

Input: '2|3 + 5|3'
Current output: 2 | 3 + 5 | 3
Expected output: 7 | 3

The program should be able to sum up fractions together, it looks like it is not doing anything here.

Error when reducing: '(h-1)^3'

Input: '(h-1)^3'
Message: "can't access property "symbol", operators[term.data.name] is undefined"

Looks weird...

Error when reducing: 'h + (-1)'

https://martinheywang.github.io/literal-calculator-web/?expression=h%20*%20(-1)

Input: 'h + (-1)'
Message: "can't access property "data", expression.right.operator is undefined"

*Error when reducing: '((2+1)3)^2'

Input: '((2+1)*3)^2'
Message: "Can't stringify term of an unknown type."

All literal expressions that equal zero fails at reducing.

The console shows a recursion error.

Current behaviour :

• 3 - 3 = (error)
• 2x - 2x = (error)
• 2x * 0 = (error)

Expected behaviour :

• 3 - 3 = 0
• 2x - 2x = 0
• 2x * 0 = 0

Unexpected result when reducing: (x+y)(x+y)/(x+y)

https://martinheywang.github.io/literal-calculator-web/?expression=(x%2By)(x%2By)%2F(x%2By)

Input: (x+y)(x+y)/(x+y)
Current output: (x^2 + y^2 + 2xy)|(x + y)
Expected output: (x+y)

The result is not wrong in itself. The program develops (x+y)(x+y) and then fails at dividing by (x+y).

Unexpected result when reducing: '536x - 45x^2'

https://martinheywang.github.io/literal-calculator-web/?expression=536x%20-%2045x%5E2

Input: '536x - 45x^2'
Current output: 491x^2
Expected output: -45x^2 + 536x

The algorithm should not sum up x and x squared together.

Unexpected result when reducing: '2*(x+1)^2/6'

Input: '2*(x+1)^2/6'
Current output: (2x^2 + 4x + 2) | 6
Expected output: (x^2 + 2x + 1) | 3

The algorithm should be able to simplify fractions with an expression at the numerator or the denominator.