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Pembahasan :
g(2)=0
dit g(1)
jadi g(1)=5(1)^2-4p(1)+3
=5-4p+3
4p=5+3
p=8:4
p=2
jadi g(1)=2
g(x) = 5x^2 - 4px + 3
g'(2) = 0
ditanya : g'(1) ?
pembahasan :
g'(x) = 10x - 4p
g'(2) = 0
10(2) - 4p = 0
20 - 4p = 0
-4p = -20
p = -20/-4
p = 5
maka :
g'(x) = 10x - 4p
g'(x) = 10x - (4×5)
g'(x) = 10x - 20
g'(1) = 10(1) - 20
g'(1) = 10 - 20
g'(1) = -10
maaf kalau salah