CoefficientArrays[{a+b+c+d+e+f==0,2a+4b+5c+6d+7e+8f==0}, {a, b}, {c,d}, {e,f}]
hi i want to convert these into matrix equation like
{{1,1},{2,4}}{a,b}+{{1,1},{5,6}}{c,d}+{{1,1},{7,8}}{e,f}
can anybody help please
One way is this:
pl = {a + b + c + d + e + f, 2 a + 4 b + 5 c + 6 d + 7 e + 8 f}; abMatrix = Normal@Last@CoefficientArrays[pl, {a, b}] cdMatrix = Normal@Last@CoefficientArrays[pl, {c, d}] efMatrix = Normal@Last@CoefficientArrays[pl, {e, f}] abMatrix.{a, b} + cdMatrix.{c, d} + efMatrix.{e, f} == pl