นิพจน์ 9: "y" minus "f" left parenthesis, "a" , right parenthesis equals StartFraction, "f" left parenthesis, "a" , right parenthesis minus "f" left parenthesis, "a" minus "h" , right parenthesis Over "h" , EndFraction left parenthesis, "x" minus "a" , right parenthesisy−fa=fa−fa−hhx−a
9
นิพจน์ 10: "y" minus "f" left parenthesis, "a" , right parenthesis equals "g" left parenthesis, "a" , right parenthesis left parenthesis, "x" minus "a" , right parenthesis left brace, "h" equals 0 , right bracey−fa=gax−ah=0
10
ซ่อน ป้ายกำกับ left parenthesis, "a" , "f" left parenthesis, "a" , right parenthesis , right parenthesisa,fa
ป้ายกำกับ
equals=
left parenthesis, 1.6 5 , 2.6 0 2 8 7 5 , right parenthesis1.65,2.602875
11
นิพจน์ 12: "g" left parenthesis, "x" , right parenthesis equals StartFraction, "d" Over "d" "x" , EndFraction left parenthesis, "f" left parenthesis, "x" , right parenthesis , right parenthesisgx=ddxfx
12
ซ่อน ป้ายกำกับ left parenthesis, "a" minus "h" , "f" left parenthesis, "a" minus "h" , right parenthesis , right parenthesisa−h,fa−h
ป้ายกำกับ
equals=
left parenthesis, 2 , 2 , right parenthesis2,2
13
Secant Line Q: "Q" equals left parenthesis, "a" minus "h" , "f" left parenthesis, "a" minus "h" , right parenthesis , right parenthesisQ=a−h,fa−h
ป้ายกำกับ:
equals=
left parenthesis, 2 , 2 , right parenthesis2,2
14
P Tangent line: "P" equals left parenthesis, "a" , "f" left parenthesis, "a" , right parenthesis , right parenthesisP=a,fa
ป้ายกำกับ:
equals=
left parenthesis, 1.6 5 , 2.6 0 2 8 7 5 , right parenthesis1.65,2.602875
15
นิพจน์ 16: "f" left parenthesis, "a" plus "h" , right parenthesisfa+h
