1, 2, 3, ..., 150
a1 = 1
a2 = 2
d = a2 - a1 = 2 - 1 = 1
a150 = 150
S150 = (a1 +a150)*75 = 151*75 = 11325
5sin²2x + 5cos²2x - 9 = <span>5*(sin²2x + cos²2x) - 9 = 5*1 - 9 = 5 - 9 = - 4
</span>
Задание 1.
График на фото.
Уравнение: х = - 5.
Задание 2.
График тоже на 2 фотографии.
Уравнения асимптот:
у = -2
х = -2
A) f`(x)=-sin(x-π/6)
б) f`(x)=-cos(π/4-x)
b)f`(x)=-1/(sin²(π/6+x))
г)f`(x)=1/cos²(x+π/3)
<span>8</span><span>cos20cos40cos80=8sin20cos20cos40cos80/sin20=4sin40cos40cos80/sin20=2sin80cos80/sin20=sin160/sin20=sin20/sin20=1</span>