Book
Linear Algebra
Author
Gilbert Strang
Edition
{ y=function('y',x) print 'question' DE=diff(y,x,2)+4*y-8*x*x print DE print 'answer' var('y,k,A,B') k=2*x*x-1 f=A*cos(2*x)+B*sin(2*x) f=f+k print f
} { var('c1,c2') y=function('y',x) print 'question' DE=diff(y,x,2)-3*diff(y,x)+2*y-exp(x) print DE print 'answer' f=c1*exp(x)+c2*exp(2*x)-x*exp(x) print f }
Solution by:
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