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Tamiku [17]
3 years ago
12

Lim -> 0 sin(2x) /(x*cos(x) ) help

Mathematics
1 answer:
Ilya [14]3 years ago
4 0
Sin (2x) can be written like:sin (2x) = 2sin(x)cos(x)
substituting this expresion in the original one:sin(2x) /(x*cos(x) =2sin(x)cos(x)/x*cos(x)=2sinx/x
taking limits, and noticing that lim as x->0 of sinx/x=1:lim 2sinx/x=2*1=2x->0
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3 years ago
The length of a rectangle is 3 times twice the width. The perimeter is 36. What are the side lengths?
Svetllana [295]

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2 years ago
The sum of A and B is 171 and their difference is 35. What are the numbers?
antoniya [11.8K]

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Step-by-step explanation:

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3 0
4 years ago
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