IMG-20190921-WA0001_22_10_2019_09_54 - AD)TO 3(5 196)2 150J Triangle 4 gles suivants sont rectangles au point origine Pour ces 4 triangles 25 mm

# IMG-20190921-WA0001_22_10_2019_09_54 - AD)TO 3(5 196)2 150J...

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Unformatted text preview: AD)TO 3)* +(5, 196)2 150J Triangle 4 gles suivants sont rectangles au point origine. Pour ces 4 triangles. . . 25 mm Triangle 3 U iangles rectangles culer la longueur du cote vertical, AB, en mm 121,40 mm Triangle 2 a = 280 11 Pi/12 rad Triangle 1 a = 400 U (01,02 mm C Bay 30 AC. I1.2. Variation d'un polynome du second degre Proprietes : On a vu en 2nde que , si f est une fonction polynome du second degre t f (x) = ax2 + bx + c, avec a, b et c des reels et a # 0 , alors : 1) le sens de variation de la fonction f depend du signe de a : X -OO f (x) = ax +bx+ c a >0 f (o) f (x) = ax +bx+c f (a ) a<0 2) la fonction f admet f(a) comme extremum . C'est : un minimum en a si a > 0 . - un maximum en a si a < 0 ....
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