For Optimizition with R

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I am trying  to optimize two functions with same set of parameter such as f(x,y) and g(x,y) simulatenously. However,

I can only run optimization for each function one by one via optim() function. I just want to know if there is any method or

function I can use to minimize those two function at the same time and gain a common vector(x,y) for both functions.

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关键词：Optim With For IMI TIO optimization

就优化f(x,y)+a*g(x,y)这个方程就好了
然后系数a就是惩罚系数，你要是想让g(x,y)的最优值更大/小些，就把a值设大些就好了

I already solve this! Thank you!

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