13.07.2015 Views

Exercice fonction exponentielle

Exercice fonction exponentielle

Exercice fonction exponentielle

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

<strong>Exercice</strong>s sur la <strong>fonction</strong> <strong>exponentielle</strong>MAT TS-SNSolutionnairef ( x + 2) − f ( x + 1) 864 −1441. c = = = 6f ( x + 1) − f ( x)144 − 242. Réponsea. 0 b. 0 c. 3 d. 103. Réponsea. Points remarquables (0,1), (1,c), (-1, c1 )f(x) = 2(4) x+2 – 16 a=2, b=1, h = -2, k = -16⎛ x ⎞⎜ + h,ay + k ⎟⎝ b ⎠⎛ 0⎞(0,1) ⎜ − 2,2 × 1−16⎟= (-2, -14)⎝ 1⎠⎛1⎞(1,c) (1,4) ⎜ − 2,2 × 4 −16⎟= (-1, -8)⎝1⎠1 1 ⎛ −11 ⎞ 31(-1, ) (-1, ) ⎜ − 2,2 × −16⎟ = (-3, - )c 4 ⎝ 1 4 ⎠ 2b. Rc. ]-16, +∞ [d. -16 car y = ke. f(x)=02(4) x+2 – 16=0 2(4) x+2 = 16 (4) x+2 = 8 (2 2 ) x+2 = 2 3 (2) 2x + 4 = 2 3 2x + 4 = 3 (égalité des bases entraîne égalité des1exposants) 2x = -1 x = −2www.sylvainlacroix.ca

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!