Найдите область определения функции: y=2+ корень из sinx/2
sin(x/2)>=0
2pn<=x/2<=p+2pn
4pn<=x<=2p+4pn, n целое число
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sin(x/2)>=0
2pn<=x/2<=p+2pn
4pn<=x<=2p+4pn, n целое число