10+23=33
10-23-2=-15
14+27*(-1)=-13
14-27-(-1)= 41
-11-12=-23
-11+12=1
48+12=60
-48+12=-36
-2*5=-10
-24 :(-2)=12
1) 0
2) 2
.......................................
1) ....=-у+7,4-х-11,6+у=-4,2-х
2).....=-2,6+х+у-х+у+2.6=у<span>²</span>
<span>1)f(x)=(2+Корень из х)*(1-3/х)
</span>f'(x)=[uv]'=u'v+v'u u=(2+Корень из х) u'=1/2√x v=(1-3/х) v'=3/v²
f'(x)=(1-3/х) /2√x+3(2+√x) /v²
<span>2) f(x)=sin2x*cos3x+cos2x*sin3x=sin(2x+3x)=sin5x
</span>f'(x)=5cos5x