Question

a) p(1,1) r:-x-y-1=0

b) p(0,0) r:x-y+1=0

c) p(-1,-1) r:2x+2y+2=0

ajuda tem que entregar hoje 18:00hrs​

Answer 1

a tarefa pede a distancia entre o ponto p e a reta r

a)

x0 = 1 , y0 = 1, A = 1, B = -1, C = -1

d = lAx0 + by0 + Cl/√(A² + B²)

d = l1 - 1 - 1l/√(1 + 1)

d = 1/√2 = √2/2

b)

x0 = 0, y0 = 0, A = 1, B = -1 , C = 1

d = l1l/√2 = √2/2

c)

x0 = -1, y0 = -1 , A = 2, B = 2, C = 2

d = l-2 -2 + 2l/√8

d = 2/√8 = 2/2√2 = √2/2