Search found 11 matches

by badass0
Wed Aug 26, 2015 12:52 am
Forum: National Math Camp
Topic: Discussion on Exam 1
Replies: 8
Views: 1692

Re: Discussion on Exam 1

Can anybody give me hints on how to solve problem 1.4?
by badass0
Mon Aug 24, 2015 10:18 pm
Forum: National Math Camp
Topic: Exam 1, Online Number Theory Camp, 2015
Replies: 15
Views: 3725

Re: Exam 1, Online Number Theory Camp, 2015

Please fix this
by badass0
Mon Aug 24, 2015 10:23 am
Forum: National Math Camp
Topic: ONT Camp Day 1
Replies: 12
Views: 2861

Re: ONT Camp Day 1

i can't understand the 5th problem. anybody please help me or provide a bangla version of the problem
by badass0
Fri Aug 21, 2015 11:39 pm
Forum: National Math Camp
Topic: Online Number Theory Camp, 2015
Replies: 1
Views: 1355

Re: Online Math Camp 1, 2015

It would have been better if the booklist is published earlier
by badass0
Fri Aug 21, 2015 11:38 pm
Forum: Secondary Level
Topic: REciprocals!!
Replies: 3
Views: 998

Re: REciprocals!!

Thanks :D :D
by badass0
Sat Mar 14, 2015 8:31 pm
Forum: Geometry
Topic: Congruence
Replies: 1
Views: 718

Congruence

Capture.JPG $ABCDEF$ is a regular hexagon. $H$ and $G$ are midpoints of $AB$ and $ED$. Prove,\[ \triangle AFE \cong \triangle AEM \cong \triangle BMD \cong \triangle BCD \] and \[ \triangle AHM \cong \triangle BHM \cong \triangle DMG \cong \triangle EMG \cong \triangle AKF \cong \triangle IEF \cong...
by badass0
Wed Mar 04, 2015 8:36 pm
Forum: Secondary Level
Topic: REciprocals!!
Replies: 3
Views: 998

REciprocals!!

Write $x$ as the sum of the reciprocals of $k$ odd integers? Write $x$ as the sum of the reciprocals of $k$ even integers? Write $x$ as the sum of the reciprocals of $k$ integers? Write $\frac{x}{y}$ as the sum of the reciprocals of $k$ odd integers? Write $\frac{x}{y}$ as the sum of the reciprocals...
by badass0
Wed Mar 04, 2015 12:41 am
Forum: National Math Olympiad (BdMO)
Topic: BdMO national 2014: junior 8
Replies: 9
Views: 2425

Re: BdMO national 2014: junior 8

Tahmid wrote: apply stewart's theorem in triangle $FVK$ .
Stewart's Theorem apply করেও তো আমার একই জিনিস আসছে।
by badass0
Tue Mar 03, 2015 10:56 pm
Forum: National Math Olympiad (BdMO)
Topic: BdMO national 2014: junior 8
Replies: 9
Views: 2425

Re: BdMO national 2014: junior 8

tanmoy wrote: By Stewart's theorem,we get: $EF^{2}=\frac{5a^{2}}{8}$
$EF^2$ এর মান কিভাবে $ \frac{5a^2}{8}$ হয়. আমারতো $EF^2$ মান এইরকম আসছেঃ
$
EF^2=OF^2-OE^2
=(\frac{a}{2}) ^2 - (\frac{a \sqrt{2}}{4}) ^2
=\frac{a^2}{4} - \frac{2a^2}{16}
=\frac{a^2}{8}
$
by badass0
Tue Mar 03, 2015 10:51 pm
Forum: National Math Olympiad (BdMO)
Topic: BdMO national 2014: junior 8
Replies: 9
Views: 2425

Re: BdMO national 2014: junior 8

@tonmoy
$EF^2$ এর মান কিভাবে $ \frac{5a^2}{8}$ হয়. আমারতো $EF^2$ মান এইরকম আসছেঃ
$
EF^2=OF^2-OE^2
=(\frac{a}{2}) ^2 - (\frac{a \sqrt{2}}{4}) ^2
=\frac{a^2}{4} - \frac{2a^2}{16}
=\frac{a^2}{8}
$