V_n = (1 - \beta) * V_{n-1} + (\beta) * dW_nVn=(1−β)∗Vn−1+(β)∗dWn
V_n = \beta * V_{n-1} /(1-\beta) * dW_nVn=β∗Vn−1/(1−β)∗dWn
V_n = \beta * V_{n-1} + (1-\beta) * dW_nVn=β∗Vn−1+(1−β)∗dWn
V_n = \beta * V_{n-1} - (1-\beta) * dW_nVn=β∗Vn−1−(1−β)∗dWn