表达式12: "y" equals left parenthesis, 3 "x" squared minus 18 "x" Subscript, 0 , Baseline plus 27 , right parenthesis left parenthesis, "x" minus "x" Subscript, 0 , Baseline , right parenthesis plus left parenthesis, "x" cubed minus 9 "x" squared plus 27 "x" Subscript, 0 , Baseline minus 26 , right parenthesisy=3x20−18x0+27x−x0+x30−9x20+27x0−26
12
表达式13: "y" equals left parenthesis, 3 "x" squared minus 18 "x" Subscript, 0 , Baseline plus 27 , right parenthesis "x" minus 3 "x" cubed plus 18 "x" squared minus 27 "x" Subscript, 0 , Baseline plus left parenthesis, "x" cubed minus 9 "x" squared plus 27 "x" Subscript, 0 , Baseline minus 26 , right parenthesisy=3x20−18x0+27x−3x30+18x20−27x0+x30−9x20+27x0−26
13
表达式14: "y" equals left parenthesis, 3 "x" squared minus 18 "x" Subscript, 0 , Baseline plus 27 , right parenthesis "x" minus 2 "x" cubed plus 9 "x" squared minus 26y=3x20−18x0+27x−2x30+9x20−26
14
Vendetangent i ( x₁ ; y₁ )
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15
表达式16: "y" equals "f" left parenthesis, "x" Subscript, 1 , Baseline , right parenthesis left brace, 8 thirds less than or equal to "x" less than or equal to 10 thirds , right bracey=fx183≤x≤103
16
表达式17: left parenthesis, "x" Subscript, 1 , Baseline plus StartFraction, left bracket, negative 1 , 1 , right bracket Over 3 , EndFraction "t" , "f" left parenthesis, "x" Subscript, 1 , Baseline , right parenthesis , right parenthesisx1+−1,13t,fx1
00
定义域t最小值：
less than or equal to "t" less than or equal to≤t≤
11
定义域t最大值：
17
f ( x ) vha. regression
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18
表达式19: "y" equals "a" "x" cubed plus "b" "x" squared plus "c" "x" plus "d"y=ax3+bx2+cx+d
19
表达式20: "f" left parenthesis, "x" Subscript, 2 , Baseline , right parenthesis tilde "a" "x" cubed plus "b" "x" squared plus "c" "x" Subscript, 2 , Baseline plus "d"fx2~ax32+bx22+cx2+d
20
表达式21: "y" equals "f" left parenthesis, "x" , right parenthesisy=fx
21
"x" Subscript, 2 , Baselinex2
"f" left parenthesis, "x" Subscript, 2 , Baseline , right parenthesisfx2
negative 2−2
r1c2: negative 124−124
r1c3:
negative 1−1
r2c2: negative 63−63
r2c3:
00
r3c2: negative 26−26
r3c3:
11
r4c2: negative 7−7
r4c3:
22
r5c2: 00
r5c3:
r6c2:
r6c3:
22
Punkter
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23
28
技术支持
技术支持
left parenthesis, "x" Subscript, 1 , Baseline , "y" Subscript, 1 , Baseline , right parenthesis equals ( 3 ; 1 )x1,y1=(3;1)
Start black, left parenthesis, "x" Subscript, 0 , Baseline , "y" Subscript, 0 , Baseline , right parenthesis equals ( 2.2 5 ; 0.5 8 ) End blackx0,y0=(2.25;0.58)
