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1 0 –7 61 1 1 – 61 1 – 6 02 2 61 3 0–3 –31 0Las soluciones de la ecuación son x = 1, x = 2, x = –3. Sustituyendoestos valores en f (x) o en g (x) obtenemos que los puntos de corteentre ambas funciones son (1, –3), (2, 0) y (–3, –15).b) A ==1# [(x 3 – 4x) – (3x – 6)]dx +–31# (x 3 – 7x + 6)dx +–3= x 44 – 7x 22 + 6x 1–32# [(x 3 – 4x) – (3x – 6)]dx =12# (x 3 – 7x + 6)dx =1+ x 44 – 7x 22 + 6x 2= 114 – 7 2 + 6 2 – 1 81 4 – 63 2 – 18 2 + (4 – 14 + 12) – 1 1 4 – 7 2 + 6 2 == 11 4 + 1174 + 2 – 11 4 = 1284 + 3 4 = 131 = 32,75 u241=3 Resolucióna) ° x + y = 1§¢§£ky + z = 0x + (k + 1)y + kz = k + 1ZM Z =1 1 00 k 11 k + 1 k8 M’ =1 1 1 0 10 k 1 01 k + 1 k k + 1214243M= k 2 – k = k (k – 1) = 015k = 0k = 1• Si k ? 0 y k ? 1 8 ran (M) = ran (M’) = n.º de incógnitas = 3.El sistema es compatible determinado.

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