Comments (7)
can now parse the example above - can parse whenever one of the factors is a "naked" number. See tests at the commit linked in the "closure" message above.
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Unfortunately I’m deep in another project at the moment, I can’t look into this properly.
I think I remember that there might be some problems in supporting implicit multiplication input because it's not always unambiguous, plus I extended the language to support higher-order functions. So in (x+1)(x-1), as far as the system knows (x+1) could really result into a function to be applied to (x-1). So it can’t just assume at parse-time that (x+1)(x-1) is a multiplication. Other cases could be handled though (like in the case of numerical constants), but it could be hit and miss.
That’s as far as I remember but I might be wrong, I’d need to look into this properly to be sure 100%. Maybe try to look at the tests if there is any example that rings a bell...
How about having simplify to output with explicit multiplications instead?
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Thanks for your feedback.
The trouble is: simplify
produces the implicit multilplication, not me. So the function expand
can't be used after simplify
.
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I think I remember that there is a flag to control that. Sorry I can't check for you as I'm deep in another project and can't "load" more code in my head right now.
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I'm having the same issue I think. Some Algebrite functions will return results of the form "a (y)". The implicit multiplication just before a parenthesis can't be evaluated further by Algebrite and will return "nil". My current workaround is to replace the implicit multiplication with "*":
eq.replace(/([\d\w])( )(\()/g, "$1"+"*"+"$3")
This matches any number or constant in front of a space with a start parenthesis after. It does not match "/+-" etc.
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Thanks @danielsvane.This is, in fact, easy to bypass. The most serious problem is a bug related with "tough" expressions, related in issue Expression too complex
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Great, @davidedc, thanks!
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Related Issues (20)
- Solving Boolean expressions
- Solving systems of equations
- Absolute value syntax errors
- Solving equations involving fractions
- Simplify
- GUI for user to edit/enter the equation in HTML
- Testing equivalance could be more smart, easily
- Update NPM version
- cann't simpifay apk
- the order of the powers of the polynomial is reversed HOT 1
- How to solve equations? HOT 2
- How to identify if an expression given by a human is in its simplified form HOT 4
- Is there some kind of AST ? HOT 1
- draw function is needed HOT 1
- Can't return numerical results < 1e-6. Can't substitute variables with scientific notation
- Infinite loop when try to inverse a 1x1 matrix
- Computation of binomial
- Display order of polynomial monomials
- simplification with exponents HOT 1
- i raised to exponents bigger than 4 is not calculated correctly
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