Problrmas de Cálculo
Enviado por marthasvm04 • 12 de Noviembre de 2015 • Prácticas o problemas • 1.661 Palabras (7 Páginas) • 95 Visitas
16. x2 - 5x - 6 > 0
(x+1)(x-6)
X1 = -1 X2 = 6
(-1,6)[pic 1]
[pic 2][pic 3]
[pic 4][pic 5][pic 6][pic 7][pic 8][pic 9][pic 10][pic 11]
-1 0 6
17. 2x2 + 5x - 3 > 0
(2x+6)(2x-1)/2
(x+3)(2x-1)
X1 = -3 X2 = 1/2
(-3,1/2)
[pic 12]
[pic 13][pic 14]
[pic 15][pic 16][pic 17][pic 18][pic 19][pic 20][pic 21]
-3 0 1/2
18. 4x2 - 5x - 6 < 0
(4x-8)(4x+3)/4
(x-2)(4x+3)
[pic 22]
X1 = -3/4 X2 = 2[pic 23]
(-3/4,2)
[pic 24]
[pic 25]
[pic 26][pic 27][pic 28][pic 29][pic 30][pic 31]
-3/4 0 2
19. x+4/x-3 ≤ 0[pic 32]
(x+4)(x-3)[pic 33]
X1 = -4 X2 = 3 [-4,3] [pic 34]
[pic 35][pic 36][pic 37][pic 38][pic 39][pic 40][pic 41]
-4 0 3
20. 3x-2/x-1≥ 0
3x-2=0
x=2/3
x-1=0
x=1
[pic 42]
X1 = 2/3 X2 = 1
[2/3,1][pic 43]
[pic 44]
[pic 45]
[pic 46][pic 47][pic 48][pic 49][pic 50][pic 51]
0 2/3 1
21. 2/x < 5
1/x < 5/2
x < 2/5
[pic 52]
X1 = 2/5[pic 53][pic 54]
(2/5,∞+)
[pic 55]
[pic 56][pic 57][pic 58][pic 59][pic 60][pic 61][pic 62]
0 2/5
22. 7/4x ≤ 7
1/4x≤7/7
1/4x≤1
1/x≤4
x≤1/4
[pic 63]
X1 = 1/4[pic 64]
[1/4,∞+][pic 65]
[pic 66]
[pic 67][pic 68][pic 69][pic 70][pic 71][pic 72][pic 73]
0 1/4
23. 1/3x-2 ≤ 4
1/3x-2 -4 ≤ 0
1-4 * (3x-2)/3x-2 ≤ 0
1-12x+8/3x-2 ≤ 0
9-12/3x-2 ≤ 0
9 - 12x = 0
-12x = -9
x = 3/4
3x - 2 = 0
3x = 2
x = 2/3[pic 74]
X1 = 2/3 X2 =3/4
[pic 75]
[pic 76]
[pic 77]
[pic 78][pic 79][pic 80][pic 81][pic 82][pic 83]
...