Question

捧

求解2、5謝謝🙏

()
2: 2x - y +/-0 * * * *
) (3)
A (3, 2) B(5,-4), st AB 8 7 7 Map =
(4) sta f(x) = 3x + 4x²-xx+3x+1 38 24 (x-1)
()
že t =
二
(5)
te (X-3)(x-4)=0, XR8 =
(x-3) (x-4) >0 , x R$ =
(x-3) (x-4) co, X R8 =
e

Answer 1

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Ckforce

（2）3/5
（5）x=3或4
x>4或x<3
3<x<4