![[
73(74^4 + 74^3 + 74^2 + 74 + 1) + 1
] [
73(74^4 + 74^3 + 74^2 + 74 + 1) + 1
]](http://www.vcharkarn.com/latexrender/pictures/23d3648c33dc875a398906f4a3c85a35.gif)
2.กำหนดให้
![[
a_n = 1234...n
] [
a_n = 1234...n
]](http://www.vcharkarn.com/latexrender/pictures/50100ddf51856e85ef5767b3209da85e.gif)
![[
a_{12} = 123456789101112
] [
a_{12} = 123456789101112
]](http://www.vcharkarn.com/latexrender/pictures/3487ba282dc5573b341670d4f40929f5.gif)
![[
a_{2550}
] [
a_{2550}
]](http://www.vcharkarn.com/latexrender/pictures/35c0ed299bf785d38b4a54f410555c05.gif)
3.จงหาค่าของ
![[
1 bullet 3 - 3 bullet 5 + 5 bullet 7 - 7 bullet 9 + ... + 93 bullet 95 - 95 bullet 97 + 97 bullet 99
] [
1 bullet 3 - 3 bullet 5 + 5 bullet 7 - 7 bullet 9 + ... + 93 bullet 95 - 95 bullet 97 + 97 bullet 99
]](http://www.vcharkarn.com/latexrender/pictures/4ccae10eb3685d13327c36c806e348de.gif)
4.ห.ร.ม. ของ
![[
x^3 + (a - 1)x^2 + (b + a)x - b
] [
x^3 + (a - 1)x^2 + (b + a)x - b
]](http://www.vcharkarn.com/latexrender/pictures/5763db13fb42be66f67add10e83834e5.gif)
![[
x^3 - (b + 1)x^2 + (b - a)x + a
] [
x^3 - (b + 1)x^2 + (b - a)x + a
]](http://www.vcharkarn.com/latexrender/pictures/62c2ee9fdd90c6c5bf7b7405933f4795.gif)
5.จงหาค่า k จากสมการ
![[
x^2 - 3kx + k = 0
] [
x^2 - 3kx + k = 0
]](http://www.vcharkarn.com/latexrender/pictures/5d3c576d0df6a924808ceda77e9d3e95.gif)
6.จงหาค่าของ
![displaystyle{ [
sqrt {frac{8}{{2 bullet 4}} + frac{8}{{4 bullet 6}} + frac{8}{{6 bullet 8}} + ... + frac{8}{{98 bullet 100}}}
]} displaystyle{ [
sqrt {frac{8}{{2 bullet 4}} + frac{8}{{4 bullet 6}} + frac{8}{{6 bullet 8}} + ... + frac{8}{{98 bullet 100}}}
]}](http://www.vcharkarn.com/latexrender/pictures/dca60d291ec12af5855d4c0934495d48.gif)
7.จำนวนของลำดับที่ 2006 ของลำดับ 1,-2,2,-3,3,-3,4,-4,4,-4,5,-5,5,-5,5,...
เท่ากับจำนวนใด
8..ถ้า
ของ 20 เท่ากับ 6 แล้ว
ของ 10 เท่ากับเท่าไร
![[
frac{1}{4}
] [
frac{1}{4}
]](http://www.vcharkarn.com/latexrender/pictures/6affba80d1f9747611c87166488ff61a.gif)
![[
frac{1}{5}
] [
frac{1}{5}
]](http://www.vcharkarn.com/latexrender/pictures/2c5410f575dd4a7d3d3e7249973c3341.gif)
9.กำหนด
จงหาค่าของ
![[
2cos ^2 {rm A} = 3 - 5cos {rm A}
] [
2cos ^2 {rm A} = 3 - 5cos {rm A}
]](http://www.vcharkarn.com/latexrender/pictures/590198e463f2671dc227188f2b8bfe93.gif)
![displaystyle{ [
frac{{sin {rm A} + tan {rm A}}}{{sin {rm A} - tan {rm A}}}
]} displaystyle{ [
frac{{sin {rm A} + tan {rm A}}}{{sin {rm A} - tan {rm A}}}
]}](http://www.vcharkarn.com/latexrender/pictures/d310c233d97cace397dc65b10f45bd94.gif)
10.ถ้า
แล้ว
เท่ากับเท่าใด
![[
x^3 + frac{1}{{x^3 }} = 52
] [
x^3 + frac{1}{{x^3 }} = 52
]](http://www.vcharkarn.com/latexrender/pictures/64474e1772e8c159fe71957afc47fc63.gif)
![[
x^2 + frac{1}{{x^2 }}
] [
x^2 + frac{1}{{x^2 }}
]](http://www.vcharkarn.com/latexrender/pictures/1b02e678c4344d66590914d51e88ff91.gif)