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RenanBrunelli
@RenanBrunelli
May 2020
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Sabendo que π/6 é a raiz da equação cos²x - m . senx + 1 = 0 determine m
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MarcosEdvardo
Verified answer
Π/6 = 30
cos² . x - m . senx + 1 = 0
cos² . 30 - m . sen30 + 1 = 0
cos 30² - m . 1/2 + 1 = 0
(V3/2)² - m/2 = -1
3/4 - m/2 = -1
-m/2 = -1 - 3/4
-m/2 = (-4-3)/4 .(-1)
m/2 = 7/4
m = 7.2/4
m = 14/4
m = 7/2
6 votes
Thanks 23
MarcosEdvardo
ataah, espera ai, vou ajeita, pelo pc atrapalha
MarcosEdvardo
agr sim
MarcosEdvardo
Verdade, obg
RenanBrunelli
vlw meus amigos so faltava essa pra eu terminar a primeira lista
MarcosEdvardo
De nada!
Comentários
Olá Renan,
1 votes
Thanks 10
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Verified answer
Π/6 = 30cos² . x - m . senx + 1 = 0
cos² . 30 - m . sen30 + 1 = 0
cos 30² - m . 1/2 + 1 = 0
(V3/2)² - m/2 = -1
3/4 - m/2 = -1
-m/2 = -1 - 3/4
-m/2 = (-4-3)/4 .(-1)
m/2 = 7/4
m = 7.2/4
m = 14/4
m = 7/2