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f<-function(x){(x^3-2*x^2-8*x+16)}
x<-seq(3,100,0.001)
i <- which.min(f(x))
plot(x,f(x), type = 'l', lwd=2, col = 'blue')
x[i]
f(x[i])

Success #stdin #stdout 0.55s 47888KB

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Standard input is empty

stdout

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[1] 3
[1] 1

https://ideone.com/Nmfu15

language:

R (R 3.5.2)

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