Write 6.38612 correct to 2 decimal places.

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

7 0

6.39
It’s 2 places to the right of the decimal and since 6 is 5 or greater, you will round the 8 up

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Write a cosine function that has an amplitude of 3, a midline of 2 and a period

marissa [1.9K]

Answer:

f(x) = 3 cos (2Pi / period value ; x )+ 2

or see answer using 2 as the period see answer in bold below.

Step-by-step explanation:

cosine function amplitude of 3 is A = 3

The period is used to find B

You need to show period value as the denominator and work out from there with 2PI as a function numerator to show as 2pi / period can be a data angle

C is the adding value.

Acos (Bx) + C

A = 3

Bx = 2 pi / period

C = + 2

However f 2 is also the period found

then we just plug in 2 to above formula

f(x) = 3 cos (2Pi / 2 ; x )+ 2

f(x) = 3cos (x pi) + 2

6 0

3 years ago

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aleksley [76]

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