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3 years ago

If x,y and z are the first three terms of an geometric sequence, show that x^2,y^2 and z^2 form another geometric sequence

1 answer:

8 0

x y z are in geometric
x/y = y/z
OR y^2=xz

x^2, y^2, z^2

x^2, xz, z^2
If they are in geometric sequence then
xz/x^2 = z^2/xz
z/x = z/x
The ratios are common
so x^2,y^2 & z^2 is a GP.

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Find the value of that makes ADEFAXYZ.

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Answer:

x = 2/3

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3 years ago

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arsen [322]

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Step-by-step explanation:

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4 years ago

What is the inverse of x-2

SCORPION-xisa [38]

Answer:

y = x + 2

Step-by-step explanation:

The expression x-2 is from the equation y = x - 2.

To find the inverse of the equation, switch the "x" and "y" variables, then solve or isolate for "y", meaning to separate it from the other numbers.

y = x - 2 Original equation

x = y - 2 Switched "x" and "y" variables

x + 2 = y - 2 + 2 Add 2 to both sides to cancel out '-2' on the side with "y"

x + 2 = y

y = x + 2 Variable is on left side in standard formatting

To isolate, do the reverse operation for the number you want to get rid of.

On the side with "y", I wanted to get rid of '-2' so I could separate "y" from everything else. '+2' is the reverse operation for '-2'.

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3 years ago