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Matematica C3 – Algebra 1 - itis magistri cumacini

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www.matematicamente.it - <strong>Matematica</strong> C 3 – <strong>Algebra</strong> 1 – 6. <strong>Algebra</strong> di 1° gradoRisolvi i seguenti sistemi per mezzo di opportune sostituzioni delle variabili{12x 1 y =−450223x 2 y =1 sostituire u= 1 x ; v= 1 y{52x − 2 y =25031504505{506507R. − 1 27 ; 2 19x 2 y =1 R. 7 6 ;14 {1x 2 y =31x 3 R. 1;1y =4{2x 4 y =−32x −3 y =4 R. 2 ;−11x1 − 2y−1 =22x1 − 1{1x −3 y 2 z =32x −3 y 2 z =42y−1 =3 R. − 1 4 ;−2 x 4 y −1 z =−3 R. 1;− 5 8 ;− 5 7{ 508 x3 y 3 =92 x 3 − y 3 =−6509{ x2 y 2 =13x 2 − y 2 =5510{ x2 y 2 =−1x 2 −3y 2 =12511512R. 1;2sostituire u=x 2 ; v= y 2 R. 3;2 ,−3; 2,3 ;−2 ,−3;−2{4x −2 2 y −2 2 z =0 21x 1 2 z =2 2 R.2y −2 2 z =0 2{1x y 2x− y =13x y − 5 sostituire u= 1x− y =2Nessuna soluzione reale1;1 ;1 ,−1 ;1;1 ,1;−1;1 ,1 ;1 ;−1 ,−1;−1 ;1;−1;1 ;−1 ,1;−1;−1 ,−1;−1;−1x y ;v=... R. 55 9 ;− 44 9 357

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