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note= saya tidak mengulang soal. jadi langsung ke hasil penurunannya.
3.
lim(x->3) (2x-3)/(14x^3 -18x)
=(2(3)-3)/(14(3)^3 -18(3))
=(3)/324= 1/108
4.
lim (x->3) 1/1
jadi lim(x->3) dari soal= 1
5.
lim(x->4) 2/(2x-1)
=2/(2(4)-1)= 2/7
6. diubah dulu pembilangnya
lim(x->2) (x^2+6x+9)(12-6x) / (2+3x-x^3)
= lim(x->2) (12x^2-6x^3+72x-36x^2+108-54x) / (2+3x-x^3)
turunkan
= lim(x->2) (24x-18x^2+72-72x-54)/(3-3x^2)
x diganti 2
=(24(2)-18(2)^2+72-72(2)-54)/(3-3(2)^2)
= (48-72+72-144-54)/(3-12)
= (-150)/(-8)= 75/4
nomer 6 coba hitung lagi...