Question and Answers Forum

All Questions      Topic List

Matrices and Determinants Questions

Previous in All Question      Next in All Question      

Previous in Matrices and Determinants      Next in Matrices and Determinants      

Question Number 75814 by Master last updated on 18/Dec/19

Commented by Master last updated on 18/Dec/19

xyz=?

xyz=?

Answered by mr W last updated on 18/Dec/19

(i)+(ii): 2x^2 +2y−2x=0 ⇒y=x−x^2 ⇒z=1+2x−y=1+x+x^2 put this into (iii): x^4 +(x+x^2 )(x−x^2 )=1 x^2 =1 ⇒x=1 or −1 ⇒y=0 or −2 ⇒z=3 or 1 ⇒xyz=0 or 2

(i)+(ii):2x2+2y−2x=0⇒y=x−x2⇒z=1+2x−y=1+x+x2putthisinto(iii):x4+(x+x2)(x−x2)=1x2=1⇒x=1or−1⇒y=0or−2⇒z=3or1⇒xyz=0or2

Terms of Service

Privacy Policy

Contact: info@tinkutara.com