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Greeley [361]
3 years ago
11

Find the sum of the reciprocals of two consecutive even integers if the larger integer is x. please answer;-;​

Mathematics
1 answer:
Harman [31]3 years ago
4 0

Step-by-step explanation:

Let the larger integer be x

Hence, the smaller integer = x-2

Hence,

Reciprocal of the x= 1/x

Reciprocal of x-2= 1/ x-2

Hence. their sum=

\frac{1}{x}  +  \frac{1}{x  - 2}  \\  =  \frac{x - 2 + x}{x(x - 2)} \\  =  \frac{2x - 2}{ {x}^{2}  - 2x}

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We know that : (a - b)(a + b) = a² - b²

\implies \sf{3tanx + 7 = \dfrac{2}{1 - sin^2x}}

We know that : 1 - sin²x = cos²x

\implies \sf{3tanx + 7 = \dfrac{2}{cos^2x}}

\sf{\bigstar \ \ We \ know \ that : \boxed{\sf{\dfrac{1}{cos^2x} = sec^2x}}}

\implies \sf{3tanx + 7 = 2sec^2x}

We know that : sec²x = 1 + tan²x

\implies \sf{3tanx + 7 =2(1 + tan^2x)}

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8 0
3 years ago
What two numbers multiply to 75 and add too -20
tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

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5 0
3 years ago
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Answer: \begin{bmatrix}\mathrm{Solution:}\:&\:p

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storchak [24]
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NikAS [45]

Answer:

Hi

Step-by-step explanation:

Is there like a multiple choice so I could answer it:)

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