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Jet001 [13]
3 years ago
6

Find f'(x). anything helps! also, bonus! f(x)= e^(2x-1) + e^2

Mathematics
1 answer:
MissTica3 years ago
7 0
\bf f(x)=e^{-x}(e^{2x}+x^2)\iff f(x)=e^{-x}e^{2x}+e^{-x}x^2
\\\\\\
f(x)=e^{2x-x}+\cfrac{x^2}{e^x}\implies f(x)=e^x+\cfrac{x^2}{e^x}\\\\
-----------------------------\\\\
\cfrac{dy}{dx}\left[ \cfrac{x^2}{e^x} \right]\implies \cfrac{2xe^x-x^2e^x}{(e^x)^2}\implies \cfrac{xe^x(2-x)}{(e^x)(e^x)}\implies \cfrac{x(2-x)}{e^x}\\\\
-----------------------------\\\\
\cfrac{dy}{dx}=e^x+\cfrac{x(2-x)}{e^x}
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A room is 12 CM long and 8 m broad. find the ratio of i) length to breadth II) breadth to length​
Aleks [24]

Answer:

i. Length : breadth = 3 : 200

ii. Breadth : length = 200 : 3

Step-by-step explanation:

Given the following data;

Length = 12cm

Breadth = 8m to centimeters = 8 * 100 = 800 centimeters.

To find the following;

a. Length to breadth ratio.

Length : breadth = 12 : 800

We would divide both sides by 4

Length : breadth = 3 : 200

b. Breadth to length.

Breadth : length = 800 : 12

We would divide both sides by 4

Breadth : length = 200 : 3

Note: In order to find a ratio, we must ensure that the units of the given parameters (quantities) are the same.

4 0
3 years ago
If C = t - 5 and B = t^2 + 2, find an expression that equals 2C + 2B in standard<br> form.
adell [148]

Answer:

t² + t - 3 = 0

Step-by-step explanation:

C = t - 5

B = t² - 2

2C + 2B

= 2(t - 5) + 2(t² + 2)

= 2t - 10 + 2t² + 4

= 2t² + 2t - 6

=> t² + t - 3 = 0

8 0
2 years ago
£240 is divided between Sara , Gordon and Makachy so that sara has twice as much as gordon and Gorgon gets three times as much a
ivanzaharov [21]

Answer:

Gordon gets £72

Step-by-step explanation:

£240....together

Sara.....2*(3x)

Gordon.....3x

Makachy......x

2*(3x)+3x+x=240

6x+3x+x= 240

10x=240/10

x=24

Gordon 3*24= 72

3 0
3 years ago
X^2-4x+c find the value of c
Sonbull [250]

Answer:

c = 4

Step-by-step explanation:

Given

x^2 - 4x + c

Required

Find c

The question is incomplete. However, I'll assume the expression is a perfect square.

To find c, we make use of the following formula

c = (\frac{b}{2})^2

Where

ax^2 + bx + c

By comparison with x^2 - 4x + c

a =1

b = -4

So, c = (\frac{b}{2})^2 becomes

c = (\frac{-4}{2})^2

c = (-2)^2

c = 4

<em>The value of c that makes the expression, </em>x^2 - 4x + c<em> a perfect square is 4 and the expression is: </em>x^2 - 4x + 4<em></em>

8 0
2 years ago
Write an expression for number 26 if x is an unknown number
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