Tìm GTLN,GTNN (nếu có): a) A= 2x ² + 9x -13 b) B= (3x ² -1)/(x ²+2) c) C= (x ² -4x -4)/(x ²-4x+5) d) D= (3x ²-8x+6)/(x ² -2x+1

Question

Tìm GTLN,GTNN (nếu có):
a) A= 2x ² + 9x -13
b) B= (3x ² -1)/(x ²+2)
c) C= (x ² -4x -4)/(x ²-4x+5)
d) D= (3x ²-8x+6)/(x ² -2x+1)
e) E= (3-4x)/( x ² +1)
f) F= x(x-3)(x-4)(x-7)
g) G= lx-2I + Ix-3I
h) H= Ix-1I+Ix-7I+Ix-9I

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Adela 5 years 2021-05-19T04:44:12+00:00 1 Answers 14 views 0

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  1. danthu
    0
    2021-05-19T04:46:10+00:00
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    Đáp án:

     

    Giải thích các bước giải:

    Toán Học · Lớp 8

    Tìm GTLN,GTNN (nếu có):

    a) A= 2x ² + 9x -13

    b) B= (3x ² -1)/(x ²+2)

    c) C= (x ² -4x -4)/(x ²-4x+5)

    d) D= (3x ²-8x+6)/(x ² -2x+1)

    e) E= (3-4x)/( x ² +1)

    f) F= x(x-3)(x-4)(x-7)

    g) G= lx-2I + Ix-3I

    h) H= Ix-1I+Ix-7I+Ix-9I

    tim-gtln-gtnn-neu-co-a-a-2-9-13-b-b-3-1-2-c-c-4-4-4-5-d-d-3-8-6-2-1

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