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3 years ago

What is the inverse of the function f(x) = 2x + 1?

Mathematics

2 answers:

Lerok [7]3 years ago

8 0

Answer:

1 + 2x = f(x) i believe

Step-by-step explanation:

Natali [406]3 years ago

6 0

Answer:

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

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = 2x + 1 ( subtract 1 from both sides )

y - 1 = 2x ( divide both sides by 2 )

$\frac{y-1}{2}$ = x

Change y back into terms of x

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

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Find the value of i77.<br> A) 1 <br> B) i <br> C) −1 <br> D) −i

Colt1911 [192]

assuming you mean $i^{77}$ where $i=\sqrt{-1}$

ok, notice a pattern in the exponent

$i^1=i=\sqrt{-1}$

$i^2=-1$

$i^3=-\sqrt{-1}=-i$

$i^4=1$

$i^5=i=\sqrt{-1}$

hum, so it goes 1,2,3,4, then repeats

ok, so every 4, the cycle repeats

how far up is 77 from a multipule of 4?

4*19=76

76 is 1 away from 77

so $i^{77}=(i^{76})(i^1)=$

$(i^4)^{19}(i)=(1)^{19}i=i$

the answer is B

8 0

3 years ago

Read 2 more answers

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AleksAgata [21]

Oh okie so sorry sorry about the delay in

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2 years ago

Yoshi multiplied -6.2 by -0.14. His result was -0.868. Which statement likely describes the error he made in his calculation?

Digiron [165]

Step-by-step explanation:

The answer is letter B. Negative and Negative is Positive.

3 0

3 years ago

Problems this is so hard so help

lozanna [386]

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3 years ago

Determine the slope of the line 5x − 3y − 12 = 0.

givi [52]

Answer:

slope of a line is given by -A/B

Here A=5 and B= -3

so , when we plug in the values: -(5/-3) = 5/3

five thirds lol.

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3 years ago