josdejong/mathjs
Ver no GitHubSimplify not working with matrix multiplication?
Open
#2.614 aberto em 1 de jul. de 2022
bughelp wanted
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Description
Shouldn't the following produce the same result?
import * as math from 'mathjs'
let scope = {
A: math.matrix([
[1, 2],
[3, 4],
]),
v: math.matrix([5, 6]),
}
const r0 = math.evaluate('A * v', scope)
console.log('Evaluate:', r0) // Evaluate: DenseMatrix {_data: [17, 39]}
//const A = new math.SymbolNode('A')
//const v = new math.SymbolNode('v')
//const expr = new math.OperatorNode('*', 'multiply', [A, v])
const expr = math.parse('A * v')
const r1 = math.simplify(expr, scope)
console.log('Simplify:', r1) // Simplify: ConstantNode {value: 0}
When I run the code, evaluate produces the expected output ([17, 39]), but simplify does not (it instead produces 0 which doesn't seem right).