Could someone please demonstrate to me how to solve these equations: a) arccos(x) + arccos(x*sqrt(3)) = pi/2 b) 2arcsin(x*sqrt(6)) + arcsin(4x) = pi/2</SPAN>
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Originally Posted by Sunyata Could someone please demonstrate to me how to solve these equations: a) arccos(x) + arccos(x*sqrt(3)) = pi/2 b) 2arcsin(x*sqrt(6)) + arcsin(4x) = pi/2</SPAN> see this thread ... solution process is the same. http://www.mathhelpforum.com/math-he...ease-help.html
Hello, Sunyata! Let: . .[1] The equation becomes: . Take the cosine: . . . which becomes: . Substitute [1]: . . . . . . . Square both sides: . . . Therefore: .
is an extraneous solution
Absolutely right, skeeter . . . *blush* Thanks for the correction.
Hmmm how exactly do u find the domain for x, skeeter and Soroban?
Originally Posted by xwrathbringerx Hmmm how exactly do u find the limit, skeeter and Soroban? this problem does not involve a limit ... what "limit" are you talking about?
Oops i mean domain for x. Sori
start a new thread.
ARGH I get a massive equation for the 2nd question which I cannot solve...
Ummm for the 2nd question, am i MEANT to get 7744x^10 - 3008x^6 + 176 x^5 + 240x^4 - 8x^2 - 8x + 1 = 0 because I keep on getting it, which I've been trying to solve for ages
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