(Un)Qualified: How God Uses Broken People to Do Big Things

(Un)Qualified: How God Uses Broken People to Do Big Things

Matematika yg nomer 4 ya kak bang ​

yg nomer 4 ya kak bang ​

nilai maksimumnya = 18

Pembahasan :

y = -x² - 2px + p²

bentuk ax² + bx + c

a = - 1

b = -2p

sumbu simetri x = 3

syarat maksimum, x = -b/(2a)

x = -(-2p)/(2(-1))

3 = 2p/(-2)

3 = -p

p = -3

y = -x² - 2px + p²

y = -x² -2(-3)x + (-3)²

y = -x² + 6x + 9

substitusi x = 3

y = -3² + 6(3) + 9

y = -9 + 18 + 9

y = 18

nilai maksimumnya = y = 18

[answer.2.content]