Rozwiąż równanie
sinx+cos²x=1/4
SINX+1-SIN^2X-1/4=0
ZAŁÓŻMY
SINX=T t nalezy (-1,1)
T+1-T^2-1/4=0
-T^2+T+3/4=0
DELTA=1+4*1*3/4=1+3=4
T1=-1+2/-2=-1/2
t2=-1-2/-2=3/2=1 1/2
sinx=-1/2
x=-30stopni
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SINX+1-SIN^2X-1/4=0
ZAŁÓŻMY
SINX=T t nalezy (-1,1)
T+1-T^2-1/4=0
-T^2+T+3/4=0
DELTA=1+4*1*3/4=1+3=4
T1=-1+2/-2=-1/2
t2=-1-2/-2=3/2=1 1/2
sinx=-1/2
x=-30stopni