August 2018 1 88 Report
TOLONG!!
diketahui f(x) = (m+1)x2-2mx+(m-1) jika f(x) selalu negatif untuk setiap x ∈ R, maka m haruslah memenuhi? (Sama caranya)
a. m<-1
b. m<-1 1/3
c. -1 1/3 < m <-1
d. m<-1 1/3 atau m>-1
e. 1<m<1 1/3

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