History of Hindu Mathematics: A Source Book v2.c17.s23.25

Again, if we put m = t, n = 1, r = 2t² in (A), we get . x &= 8t⁴ + 1, & u &= 4t²(2t² + 1), / y &= 8t³, & v &= 4t²(2t² - 1). } (c)