Jawapan: #bb l (lambda) = (39,81) + lambda (8, 27) # Penjelasan: #bb r (t) = (4t ^ 2 + 3, 3t ^ 3) # #bbr (3) = (39,81) # #bb r '(t) = (8t, 9t ^ 2) # Itulah vektor tangen. #bb r '(3) = (24, 81) # Garis tangen adalah: #bb l (lambda) = bb r (3) + lambda bb r '(3) # # = (39,81) + lambda (24, 81) # Kita boleh faktor arah vektor sedikit: #bb l (lambda) = (39,81) + lambda (8, 27) #