请教：关于非线性二元拟合

ychexingwuji

t^2=c^2(a^2+1)/(a*x-y+b)^2
# N1 U, x. g" ]2 b2 ~# k' Y自变量为x和y，因变量是t，我想拟合参数a，b，c请教一下高手指点一下方法，谢谢
* y/ p, _: y6 y! {0 Z

x	y	t	t^2
97.47	28.65	267.5	71556.25
98.91	28.49	246.8	60910.24
104.06	30.66	191.2	36557.44
103.67	30.63	181.5	32942.25
107.47	31.21	243	59049
107.26	30.74	272.2	74092.84
103.48	29.6	285.8	81681.64
106.63	30.46	291.1	84739.21
106.75	30.13	297.4	88446.76
103.57	29.74	289.2	83636.64
104.55	30.39	263.5	69432.25
101.96	30.05	204.8	41943.04
103.77	29.55	282.8	79975.84
100.27	30	187.8	35268.84
103.85	30.08	283.3	80258.89
103.9	28.96	173.9	30241.21
105.06	29.58	266.3	70915.69
106.11	30.84	235	55225
103.85	29.83	290.2	84216.04
105.39	30.87	187.3	35081.29
102.36	29.23	270.5	73170.25
105.57	30.53	270.2	73008.04
99.8	28.92	271.8	73875.24
103.01	29.98	275.3	75790.09
102.51	28.64	129.9	16874.01

% Y% h, Z4 ~* B这个问题烦恼好久了，希望有人帮一下忙