Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20050914 20:41:19
extreem of functionhello #2 20050915 00:46:51
Re: extreem of functionThe cosine and sine functions are periodic, so they have infinitely many maximums. The period of both is pi radians (180 degrees), though cos begins pi/2 radians to the left of sin. So, at every increment of pi/2, either sin or cos has a maximum. El que pega primero pega dos veces. #3 20050915 06:47:13
Re: extreem of function1/4(2+Cos[2(ab)]+Cos[2(a+b)]2Cos[c]Sin[a]Sin) < something seems wrong here Last edited by Atled (20050915 06:50:32) #4 20050915 07:26:18
Re: extreem of function
If you want c to be a maximum, and c is in the function, then we are missing something ... perhaps this function is equal to a constant? "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #5 20050915 16:36:08
Re: extreem of functionAt first i woul like to thank you for your help. #6 20050915 17:02:17
Re: extreem of functionI'm very interested in knowing what c stands for? igloo myrtilles fourmis #7 20050915 19:22:02
Re: extreem of functionI don´t know how to explane it. When i put in Mathematica a and b 45deg (a=b=45deg) 