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blsea [12.9K]
3 years ago
6

I’m new to this app and I need help with those two questions please help!!

Mathematics
1 answer:
larisa86 [58]3 years ago
6 0

y=x²-10x-7

a>0 so we will be looking for minimum

x=-b/2a=10/2=5

y=25-50-7=-32

Answer: (5;32)

y=-4x²-8x+1

а<0 so we will be looking for maximum

х=-b/2a=8/-8=-1

у=4+8+1=13

Maximum point (-1;13)

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2

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If the 1st and 10th terms of geometric sequence are 4 and 100. Fine the nth term of the sequence
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4 years ago
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4 0
3 years ago
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aleksley [76]

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From the given graph it is clear that there is an open circle at (-8,-8) and a closed circle at (3,4). It means the function is not defined at (-8,-8) but defined for (3,4).

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