oblicz:
cos5x+cosx=o
cos5x-cos=0 -2sin((5x+x/2) * sin((5x-x/2) = 0 -2sin-π/6) * sin(2x+π/6) = 0 / :(-2) x-(π/6) = kπ x = kπ- (π/6) x= kπ/3 - π/18
pozdrawiam ;]
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cos5x-cos=0
-2sin((5x+x/2) * sin((5x-x/2) = 0
-2sin-π/6) * sin(2x+π/6) = 0 / :(-2)
x-(π/6) = kπ
x = kπ- (π/6)
x= kπ/3 - π/18
pozdrawiam ;]