How to find maxima and minima without derivatives.

Mathematics

1 answer:

Mademuasel [1]2 years ago

7 0

Answer:

Finding out the relative maxima and minima for a function can be done by observing the graph of that function

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Novosadov [1.4K]

A midsegment is half as long as the one it's parallel to.

2. x = 16/2 = 8

3. y+4 = 6
y = 2

4. z/2 = 15/2
z = 15

5. (5/2)x + 4 = (6x +4)/2
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2 years ago

5x + 4y = 11<br> 2x + 6y = -7

olga55 [171]

$\left\{\begin{array}{ccc}5x+4y=11&|\cdot2\\2x+6y=-7&|\cdot(-5)\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x+8y=22\\-10x-30y=35\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ \ \ \ \ \ -22y=57\ \ \ \ |:(-22)\\.\ \ \ \ \ \ \ \ \ \ \ y=-\dfrac{57}{22}\\\\substitute\ the\ value\ of\ y\ to\ the\ first\ equation\\\\5x+4\left(-\dfrac{57}{22}\right)=11\\\\5x-2\cdot\dfrac{57}{11}=11\ \ \ \ |\cdot11\\\\55x-114=121\ \ \ \ |+114\\\\55x=135\ \ \ \ |:55$