<span>b1=0,001,q=-10</span>
<span>b2=b1*q = 0.001*(-10) = -0.01</span>
<span>b3=b2*q = -0.01*(-10)=0.1</span>
<span>b4=b3*q=0.1*(-10) = -1</span>
<span>b5 = b4*q = -1*(-10)=10</span>
<span>b6=b5*q=10*(-10) = -100</span>
A²+4a-7a-28-a²+10a-3a+30=4a+2
a=-0,15 4*(-0,15)+2=-0,6+2=-1,4
Lim x>0 (sin x)*(cos4x)*4x/(sin4x)*(4x)=1/4
применили первый замечательный предел
Lim x>0 (sin x)/(x)=1
-4=15х+13
-15х=4+13
-15х=17
х=17+15
х=32