Question

дана функция у=3/х-2+4. найдите у(5)

Answer 1

у(3-х)=-3(3-х)^2 -4(3-х) +5= -3(9-6х+х^2) -12+4х+5= -27+18х-3х^2 -12+4х+5=22х-34-3х^2

Answer 2

$rm y = cfrac{3}{x- 2} + 4 \\ y(5) = cfrac{3}{5 - 2} + 4 \\ y(5) = 1 + 4 \\ y(5) = 5$