1. | Los exact op: 3 ∙ 2x + 1 = 15 |
2. | Los exact op: 2 + 3log(x - 1) = 4 |
3. | Los met je GR op: 5log(x) = x - 6 |
OPLOSSING | |
1. | 3 ∙ 2x + 1 = 15 Þ 2x + 1 = 5 Þ x + 1 = 2log5 Þ x = -1 + 2log5 |
2. | 2 + 3log(x - 1) = 4 Þ 3log(x - 1) = 2 Þ x - 1 = 32 = 9 Þ x = 10 |
3. | PLOT Y1 = LOG(X) /
LOG(5) en Y2 = x - 6 intersect geeft x » 7,23 |