[0.2;0.3], так 3 разделить на 11 равно 0.27...
<span>1
(1+sin2h)/cos2h=tg(pi/4+h)</span><span>
(1+sin2h)/cos2h=(cosh</span>²+sin²h+2sinhcosh)/(cos²h-sin²h)=
=(cosh+sinh)²/(cosh-sinh)(cosh+sinh)=<span>(cosh+sinh)/(cosh-sinh)
tg(</span>π/4+h)=sin(π/4+h)cos(π/4+h)=(sinπ/4cosh+cosπ/4sinh)/(cosπ/4cosh-sinπ/4sinh)=√2/2(cosh+sinh)/√2/2(cosh-sinh)=<span>(cosh+sinh)/(cosh-sinh)
</span>(cosh+sinh)/(cosh-sinh)=<span>(cosh+sinh)/(cosh-sinh)</span>
Y=x²+6x-4
xв=
yв=(-3)²+6*(-3)-4=9-18-4=-13
(-3;-13)-вершина параболы
<span>x²+2,7х+1,82=0</span>
D= 7.29 - 7.28=0.01=0.1^2
x1=(-2.7-0.1)/2=-1.4
x2=(-2.7+0.1)/2=-1.3
Наименьший корень -1,4
( ⁴ √ 24 + ⁴ √ 6 ) ² : ( 4√3 + 3 √ 6 )
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1) ( ⁴ √ 24 + ⁴ √ 6 ) ² = ( ⁴√24 )² + ( ⁴√6 )² + 2 *( ⁴√24 )*( ⁴√ 6 ) = ( √ 24 ) + ( √ 6 ) +
+ 2( ⁴√ ( 24 * 6 ) = 3 √ 6 + 2 ( ⁴ √ 144 ) = 3 √ 6 + 2 * √ 12 = 3 √ 6 + 4 √ 3
2) ( 3 √ 6 + 4 √ 3 ) : ( 4 √ 3 + 3 √ 6 ) = 1
Ответ 1