tgx=t 2/t^2+7/t+5=0
5t^2+7t+2=0t1=-1t2=-0,4tgx=-1x=-p/4+пk13/4<=k<=17/4k=4 x=4П-П/4=15/4Пx2=arctg(-2/5)+4П.
tgx=t 2/t^2+7/t+5=0
5t^2+7t+2=0
t1=-1
t2=-0,4
tgx=-1
x=-p/4+пk
13/4<=k<=17/4
k=4 x=4П-П/4=15/4П
x2=arctg(-2/5)+4П.