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3 years ago

Solve the equation for all real values of x. sec2x + 2secx = 0

Mathematics

1 answer:

Alecsey [184]3 years ago

8 0

Given :

$sec^2\ x + 2sec\ x = 0$

To Find :

All real value solution of given equation.

Solution :

Simplifying given equation, we get :

sec x( sec x + 2 ) = 0

sec x = 0 and (sec x + 2) = 0

For, sec x = 0 :

x = not defined.

For, (sec x + 2) = 0 :

cos x = -1/2

x = cos⁻¹( -1/2 ) = 2π/3

Therefore, general solution is ( 2nπ ± 2π/3 ), n ∈ Z⁺ .

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ahrayia [7]

Trace several round objects onto the grid on Math Masters, page 436

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3 years ago

suppose Monica walks 1 kilometer every 15 minutes how many meters further can she walk in 1 hour at this new rate

zzz [600]

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3 years ago

9/17 15/34 6/17 9/34 geometric sequence?

zysi [14]

In a geometric sequence each number after the first is found by multiplying the previous number by a fixed number called the common ratio.

In an arithmetic sequence, each term is equal to the previous term plus or minus a constant called the common difference.

In your problem we have a sequence of numbers that appears to be decreasing in value, but on the surface it doesn't appear to be by any constant number... but if you look closely, the denominator 34 is exactly twice the other denominator 17. This would lead me to look at a common denominator to see if anything takes shape...

9/17 = 18/34
15/34
6/17 = 12/34
9/34

Now we see that each number is the previous number minus 3/34, so we have a common difference of 3/34.

This would match the definition of an arithmetic sequence and NOT a geometric sequence.

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3 years ago

Hurry i'll give brainiest if u help me

galben [10]

X^2 = b^2-c^2
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3 years ago

What type of reaction is shown below? Check all that apply. 2Na + Cl2 → 2NaCl synthesis decomposition combustion

const2013 [10]

Answer: This is a type of Synthesis reaction.

Explanation:

Synthesis reaction is a type of chemical reaction in which two or more substances combine to form a single substance.

$A+B\rightarrow AB$

Decomposition reactions are a type of chemical reactions in which a substance breaks down into two or more substances.

$AB\rightarrow A+B$

Combustion reaction is a type of chemical reaction in which a hydrocarbon reacts with oxygen gas to produce carbon dioxide and water.

$Hydrocarbon+O_2\rightarrow H_2O+CO_2$

For the given reaction:

$2Na(s)+Cl_2(g)\rightarrow 2NaCl$

Here, 2 substances are combining together to form a single substance. Hence, it is considered as a synthesis reaction.

8 0

3 years ago

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