svp urgent urgent svp exercice : 30 svp

A = 3 (1 - 4x)

Pour x = 0

A = 3 (1 - 4 * 0)

A = 3 (1 - 0)

A = 3

Pour x = 1

A = 3 (1 - 4x)

A = 3 (1 - 4 * 1)

A = 3 (1 - 4)

A = 3 - 12

A = - 9

Pour x = 1/4

A = 3 (1 - 4x)

A = 3 (1 - 4 * 1/4)

A = 3 (1 - 4/4)

A = 3 (1 - 1)

A = 3 * 0

A = 0

Pour x = 0,5

A = 3 (1 - 4x)

A = 3 (1 - 4 * 0,5)

A = 3 (1 - 2)

A = 3 * - 1

A = - 3

Pour x = 1/6

A = 3 (1 - 4x)

A = 3 (1 - 4 * 1/6)

A = 3 (1 - 4/6)

A = 3 (6/6 - 4/6)

A = 3 (2/6)

A = 6/6

A = 1

B = 5x²

Pour x = 0

B = 5x²

B = 5 * 0²

B = 0

Pour x  = 1

B = 5x²

B = 5 * 1²

B = 5 * 1

B = 5

Pour x = 1/4

B = 5x²

B = 5 * (1/4)²

B = 5 * (1²/4²)

B = 5 * 1/16

B = 5/16

B = 0,3125

Pour x = 0,5

B = 5x²

B = 5 * 0,5²

B = 5 * 0,25

B = 1,25

Pour x = 1/6

B = 5x²

B = 5 * (1/6)²

B = 5 * (1²/6²)

B = 5 * (1/36)

B = 5/36

C = (3x + 4) (- 6x+ 11)

Pour x = 0

C = (3x + 4) (- 6x + 11)

C = (3 * 0 + 4) (- 6 * 0 + 11)

C = (0 + 4) (- 0 + 11)

C = 4 * 11

C = 44

Pour x = 1

C = (3x + 4) (- 6x + 11)

C = (3 * 1 + 4) (- 6 * 1 + 11)

C = (3 + 4) (- 6 + 11)

C = 7 * 5

C = 35

Pour x = 1/4

C = (3x + 4) (- 6x + 11)

C = (3 * 1/4 + 4) (- 6 * 1/4 + 11)

C = (3/4 + 4) ( - 6/4 + 11)

C = (3/4 + 16/4) (- 6/4 + 44/4)

C = 19/4 * 38/4

C = 722/16

C = 45,125

Pour x = 0,5

C = (3x + 4) (- 6x + 11)

C = (3 * 0,5 + 4) (- 6 * 0,5 + 11)

C = (1,5 + 4) ( - 3 + 11)

C = 5,5 * 8

C = 44

Pour x = 1/6

C = (3x + 4) (- 6x + 11)

C = (3 * 1/6 + 4) (- 6 * 1/4 + 11)

C = (3/6 + 4) (- 6/4 + 11)

C = (3/6 + 24/6) (- 6/4 + 44/4)

C = 27/6 * 38/6

C = 1026/36

C = 28,5