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Jawaban:

A. x – y + 3 = 0

Penjelasan dengan langkah-langkah:

masukkan x = 1 ke persamaan f (x)

y = 2. 1² – 3. 1 + 5

= 2 – 3 + 5

= 4

y' = 4x – 3

m = 4. 1 – 3

= 4 – 3

= 1