nice世界最远处
nice世界最远处
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二次根式拟合出现问题 拟合作图 p1 = {{0.005, 0.007709}, {0.01, 0.007379}, {0.015, 0.007125}} FindFit[p1, a*sqrt (1 + (1064*10^(-9)*(x - b)/(Pi*a^2))^2), {a, b}, x, NormFunction -> (Norm[#, infinity] &)] 问题是这样的 FindFit::nrlnum: The function value {-0.007709+1. sqrt,-0.007379+1. sqrt,-0.007125+1. sqrt} is not a list of real numbers with dimensions {3} at {a,b} = {1.,1.}. 请教下这到底是什么问题啊
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