matlab cftool 自定义拟合公式 a*exp(b*(x-c)*(1-(x-c)/(4100-2c)))应该改成什么样系统才接受系统提示Expression a.*exp((4100.*b.*x-4100.*b.*c-b.*x.^2+b.*c.^2)./(4100-2c)) is not a valid MATLAB expression, has non-scalar coefficients,
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matlab cftool 自定义拟合公式 a*exp(b*(x-c)*(1-(x-c)/(4100-2c)))应该改成什么样系统才接受系统提示Expression a.*exp((4100.*b.*x-4100.*b.*c-b.*x.^2+b.*c.^2)./(4100-2c)) is not a valid MATLAB expression, has non-scalar coefficients,
matlab cftool 自定义拟合公式 a*exp(b*(x-c)*(1-(x-c)/(4100-2c)))应该改成什么样系统才接受
系统提示
Expression a.*exp((4100.*b.*x-4100.*b.*c-b.*x.^2+b.*c.^2)./(4100-2c)) is not a valid MATLAB expression,
has non-scalar coefficients, or cannot be evaluated:
Error in fittype expression ==> a.*exp((4100.*b.*x-4100.*b.*c-b.*x.^2+b.*c.^2)./(4100-2c))
? Error: Missing MATLAB operator.
matlab cftool 自定义拟合公式 a*exp(b*(x-c)*(1-(x-c)/(4100-2c)))应该改成什么样系统才接受系统提示Expression a.*exp((4100.*b.*x-4100.*b.*c-b.*x.^2+b.*c.^2)./(4100-2c)) is not a valid MATLAB expression, has non-scalar coefficients,
你的式子两边取对数可以化成多项式的形式,多项式的系数都是a,b,c的函数,你通过多项式拟合得到了多项式的系数,就能求得a、b、c了