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a_sh-v [17]
3 years ago
12

Differentiate x^2/4-x^3​

Mathematics
1 answer:
Ede4ka [16]3 years ago
8 0

Answer:

  x^4 + 8x          

  -----------------

    (4-x^3)^2

Step-by-step explanation:

d /dx  (x^2/(4-x^3)​)

When we differentiate a fraction u/v

df/dx = u/v

         =  v du/dx-u dv/dx

           ---------------------------

                         v^2

we know u = x^2   so du/dx = 2x

               v = (4-x^3)  so dv/dx = -3x^2

d dx =   (4-x^3) (2x)- x^2 ( -3x^2)

           -------------------------------------

                   (4-x^3)^2

Combining terms

           (8x-2x^4) --3x^4

           -------------------------------------

                   (4-x^3)^2

           8x-2x^4 +3x^4

           -------------------------------------

                   (4-x^3)^2

             x^4 + 8x          

           -------------------------------------

                   (4-x^3)^2

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<u>Step-by-step explanation:</u>

Factor each term then see what value(s) they have in common:

          21m         -          49n

            ∧                        ∧

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Step-by-step explanation:

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3 years ago
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Mrrafil [7]

Answer:

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Step-by-step explanation:

Hi there!

Let x equal to the smaller number.

Let y be equal to the greater number.

<u>1) Translate the information into equations</u>

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<u>2) Use substitution to solve for the smaller number</u>

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Plug the equation y=2x+7 into the above equation

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Therefore, the smaller number equates to 12.

<u>3) Use substitution to solve for the greater number</u>

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Plug in x as 12

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Subtract both sides by 12 to isolate y

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I hope this helps!

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