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Mandarinka [93]
2 years ago
8

Find dy/dx (the derivative ) of f(x) = 4x

Mathematics
1 answer:
Shkiper50 [21]2 years ago
4 0

Derivative are used to determine the nature of a function. The derivative of the function f(x) = 4x^2 is 8x

<h3>Derivative of a function</h3>

The formula for finding the derivative of a function is expressed as:

f'(x) = nax^n-1

Given the function expressed as:

f(x) = 4x^2

We are to find its derivative as shown:

f'(x) = 2(4)x^2-1
f'(x) = 8x^1 = 8x

Hence the derivative of the function f(x) = 4x^2 is 8x

Learn more on derivative here: brainly.com/question/416343

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Factor 4x^4+7x^2-2=0
natulia [17]

Answer:

(2x-1)(2x+1)(x^2+2) = 0

Step-by-step explanation:

Here's a trick:  Use a temporary substitution for x^2.  Let p = x^2.  Then 4x^4+7x^2-2=0 becomes 4p^2 + 7p - 2 = 0.  

Find p using the quadratic formula:  a = 4, b = 7 and c = -2.  Then the discriminant is b^2-4ac, or (7)^2-4(4)(-2), or 49+32, or 81.  

Then the roots are:

       -7 plus or minus √81

p=   --------------------------------

                        8

p = 2/8 = 1/4 and p = -16/8 = -2.

Recalling that p = x^2, we let p = x^2 = 1/4, finding that x = plus or minus 1/2.  We cannot do quite the same thing with the factor p= -2 because the roots would be complex.

If x = 1/2 is a root, then 2x - 1 is a factor.  If x = -1/2 is a root, then 2x+1 is a factor.  

Let's multiply these two factors, (2x-1) and (2x+1), together, obtaining 4x^2 - 1.  Let's divide this 4x^2 - 1 into 4x^4+7x^2-2=0.  We get x^2+2 as quotient.

Then, 4x^4+7x^2-2=0 in factored form, is (2x-1)(2x+1)(x^2+2) = 0.

6 0
3 years ago
Juna has 32 gallons of paint to paint a mural. The mural is divided into 6 sections. Juna uses 3 gallons of paint for each secti
REY [17]

Answer:

You will have 14 gallons of paint left over.

Step-by-step explanation:

If you divide a mural into 6 sections, and paint each section with 3 gallons of paint per section, that means you are using 3 gallons of paint 6 times.

3 x 6 = `18

Therefore, you will be using 18 gallons of paint for the mural, and when you subtract 18 gallons from the original 32 gallons of paint, you get 14 gallons left over.

6 0
3 years ago
Read 2 more answers
Solve for the variable:<br> √5-x= √6-x
maxonik [38]

Answer:

There are no solutions. this equation  seems wrong

Step-by-step explanation:

5 0
2 years ago
Rachel jogged along a trail that was 1/4 (fraction) of a mile long. She jogged along the trail 8 times. How many miles did Rache
OverLord2011 [107]
1/4+1/4+1/4+1/4+1/4+1/4+<span>1/4+1/4 = 8 Miles

1/4+1/4 = 1/2 Mile

1/2+1/2 = 1 Mile

1+1 = 2 Miles</span>
5 0
3 years ago
Read 2 more answers
Pls help!!
Licemer1 [7]
Answer will be A, and if you need help with math work Connects is a great app to use
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3 years ago
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