25 50 75 85 90 95650 5 2.1055 2.8584 1.3987 1.7165 1.9714700 5 2.3116 2.9942 1.2264 1.6313 2.0501750 1.6172 1.7273 2.5287 2.1922 2.2131 2.242800 0.6553 0.8327 0.0001 3.6759 2.8522 2.3528850 0.6307 0.3583 0.0001 4.1713 2.7664 2.1206900 1.4484 0.7454 0.0001 3.5554 2.333 1.6591950 0.8964 0.8659 0.0001 1.8237 1.4787 0.95791000 0.1354 0.2958 4.8045 0.0001 0.0001 0.00011050 0.7298 0.6636 0.0001 2.8513 2.4904 51100 0.8794 0.8078 0.5579 1.6279 1.2566 1.60691150 1.1137 1.2311 2.4353 0.2827 0.6694 0.80991200 1.5804 1.4379 3.1447 0.1464 0.5397 0.64561250 1.9977 1.8003 3.939 0.0001 0.4486 0.2652第一行是X值；第一列是Y值；除第一行和第一列外，其余为Z值。请问怎么用matlab拟和出Z=f(X，Y）的函数。
即 X=[25 50 75 85 90 95] Y=[650 700 750 800 850 900 950 1000 1050 1100 1150 1200 1250] Z=[5 2.1055 2.8584 1.3987 1.7165 1.9714 5 2.3116 2.9942 1.2264 1.6313 2.0501 1.6172 1.7273 2.5287 2.1922 2.2131 2.242 0.6553 0.8327 0.0001 3.6759 2.8522 2.3528 0.6307 0.3583 0.0001 4.1713 2.7664 2.1206 1.4484 0.7454 0.0001 3.5554 2.333 1.6591 0.8964 0.8659 0.0001 1.8237 1.4787 0.9579 0.1354 0.2958 4.8045 0.0001 0.0001 0.0001 0.7298 0.6636 0.0001 2.8513 2.4904 5 0.8794 0.8078 0.5579 1.6279 1.2566 1.6069 1.1137 1.2311 2.4353 0.2827 0.6694 0.8099 1.5804 1.4379 3.1447 0.1464 0.5397 0.6456 1.9977 1.8003 3.939 0.0001 0.4486 0.2652] Z(j,i)=f(X(i),Y(j)); i=1~6,j=1~13
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