(-1,1-(-1/3)*2))*0,04=(-11/10+1/3)*2))*0,04=(-33/30+10/30)*2))*0,04=(-23/30*2)0,04=-46/15*4/100=-184/1500
<span>cos^2(pi/8+4pi)+sin^2(pi/8-44pi)=</span>cos²(pi/8)+<span>sin</span>²<span>(pi/8</span>)=1
A) f'(x) = 3/√(Cos2x) * 1/2√Cos2x) *(-Sin2x) * 2 = --3Sin2x/Cos2x = -3tg2x
б) f'(x) = ( 1/7 * (x-9)^7* Сos2πx)' - (1/πCos³πx/4)'=
= (x-9)^6 * Cos2πx + 1/7 * (x-9)^7 * (-Sin2πx) * (-2) +2Cos^-1 πx/4* (-Sinπx/4 )* π/4.
f'(9) = Cos18π - π/2 Sin9π/4 /Cos9π/4= 1 - π/2
√121–10 √6,4* √0,1=11-10√(6,4*0,1)=11-10√0,64=11-10*0,8=11-8=3
45=3×3×5
20=2×2×5
60=3×2×5×2