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by sparkle2009
Thu Apr 02, 2009 12:22 pm
Forum: Arithmetic
Topic: need to know a number that has exactly 11 factors??
Replies: 4
Views: 3411

Re: need to know a number that has exactly 11 factors??

Take any 11 primes at random and multiply them to get your desired number
by sparkle2009
Wed Apr 01, 2009 3:31 pm
Forum: Geometry
Topic: Circles and Parabola: find smallest circle touching 2 parabs
Replies: 4
Views: 3819

Re: Circles and Parabola: find smallest circle touching 2 parabs

Yes i did calculus,I don't know how to approach the sum.
by sparkle2009
Wed Apr 01, 2009 2:00 pm
Forum: Geometry
Topic: Circles and Parabola: find smallest circle touching 2 parabs
Replies: 4
Views: 3819

Circles and Parabola: find smallest circle touching 2 parabs

Consider two parabolas
&

Find the equation of circle of minimum radius touching both the parabolas.

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