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 April 18th, 2014, 09:35 AM #1 Math Team     Joined: Jul 2013 From: काठमाडौं, नेपाल Posts: 878 Thanks: 60 Math Focus: सामान्य गणित maximum value find the condition for maximum value for y. y = sin arc (x sin r1) + sin arc (x sin r2) also, r1 + r2 = K (constant)
 April 19th, 2014, 12:15 AM #2 Math Team     Joined: Jul 2013 From: काठमाडौं, नेपाल Posts: 878 Thanks: 60 Math Focus: सामान्य गणित edit i didnt know how to edit this post. i am looking for the MINIMUM value instead of MAXIMUM.
 April 19th, 2014, 09:03 AM #3 Math Team   Joined: Dec 2013 From: Colombia Posts: 7,313 Thanks: 2447 Math Focus: Mainly analysis and algebra It doesn't make a lot of difference. You need to differentiate wrt x. Can you do that? I had a quick go at home, but I can't really see the point of the second equation (unless the $r_i$ are supposed to be functions of x. But even then, it looks a bit nasty to me.
 April 19th, 2014, 09:19 AM #4 Math Team     Joined: Jul 2013 From: काठमाडौं, नेपाल Posts: 878 Thanks: 60 Math Focus: सामान्य गणित sorry i could not differentiate it. first differentiation = 0 second differentiation > 0 (for minimum) i should differentiate y with respect to r1 or r2 ?
 April 19th, 2014, 09:20 AM #5 Math Team     Joined: Jul 2013 From: काठमाडौं, नेपाल Posts: 878 Thanks: 60 Math Focus: सामान्य गणित i forgot to mention, x = constant

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