tannercarr3441
11.03.2021 •
Mathematics
Determine whether f(x)=-4(x+3)^2-5 has a maximum or a minimum value, then find that value
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Ответ:
Yes it has
Step-by-step explanation:
From my perspective
f(x) = -4(x + 3)² - 5
f(x) = -4(x + 3)(x + 3) - 5
f(x) = -4(x² + 6x + 9) - 5
f(x) = -4x² - 24x - 36 - 5
f(x) = -4x² - 24x - 41
Dy/dx = -8x - 24
At minimum Dy/dx = 0
-8x - 24 = 0
-8x = 24
x = 24/-8
x = -3
At minimum
y = -4x² - 24x - 41
y = -4(-3)² - 24(-3) - 41
y = -4(9) + 72 - 41
y = -36 + 72 - 41
y = 36 - 41
y = -5
Ответ:
explanation:
5:3:2
=> let 5x,3x,2x
where x is any constant.
so, sum of these numbers is 1 kg = 1000 gram
hence, 5x+3x+2x =1000
=> 10x =1000
=> x =100
hence , terms are 500, 300, 200 grams