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maksimum & minimum fungsi

Posted by Unknown - - 0 komentar

Pernah mendapat soal Matematika seperti ini ?
Jika jumlah dua bilangan a dan b = 100, maka nilai maksimum dari a.b adalah ….
A. 1500
B. 2000
C. 2500
D. 3000
E. 3500

Berapakah jawabannya ?
Jika dengan cara biasa maka penyesaiannya adalah sebagai berikut.

Lalu kalau dengan rumus praktis ?
Nah ini rumusnya.

Untuk mengerjakan soal di atas kita gunakan rumus pertama, sehingga
a . b = p
a.b maksimum = 1/4 p2= 2500

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