<span>3_4/17 *2_13/19 - 3_4/17 *1_13/19 =
= 55/17 * 51/19 - 55 / 17 * 32/19 = 55/17 ( 51/19-32/19 = 55/17 * 19/19 = 55/17 = 3_4/17</span>
3,1y-3-4(6,2y+0,2)= 3,1y-3-24,8y-0,8=-21,7y-3,08.
Если y=2\7,тогда
<span>-21,7у-3,08= -21,7*2\7 -3,08=6,2-3,08=3,12</span>
Y = x^3 + x
Уравнение касательной:
y = f(x0) + f'(x0)*(x - x0)
f(x0) = f(2) = 2^3 + 2 = 8 + 2 = 10
f'(x) = 3x^2 + 1
f'(x0) = f'(x0) = 3*2^2 + 1 = 12 + 1 = 13
y = 10 + 13*(x - 2) = 13x + 10 - 26 = 13x - 16