Question

已知y=ax的六次方+bx的四次方+cx的平方+1,当x=1时,y=5,则当x=-1时,ax的六次

Answer 1

y=ax^6+bx^4+cx^2+1

当x=1时,y=5,即：5=a+b+c+1

当x=-1时,ax^6+bx^4+cx^2+1=a+b+c+1=5当x=1时,ax^3+bx+1=a+b+1=5,a+b=4

当x=-1时,ax^3+bx+1=-a-b+5=-4+5=1