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BabaBlast [244]
2 years ago
12

3t + 15 = 45. solve pls​

Mathematics
2 answers:
Talja [164]2 years ago
8 0

Answer:

t=10

Step-by-step explanation:

3t + 15 = 45

3t = 30

t = 10

Luden [163]2 years ago
6 0

Answer:

t = 10

Step-by-step explanation:

if you want detailed explanation then ask in comments

follow me

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Answer:

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Step-by-step explanation:

Given differential equation,

(x^2 + y^2) dx + (x^2 - xy) dy = 0

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Let y = vx

Differentiating with respect to x,

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v+x\frac{dv}{dx}=-\frac{x^2 + (vx)^2}{x^2 - x(vx)}

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x\frac{dv}{dx}=\frac{1 + v^2}{v-1}-v

x\frac{dv}{dx}=\frac{1 + v^2-v^2+v}{v-1}

x\frac{dv}{dx}=\frac{v+1}{v-1}

\frac{v-1}{v+1}dv=\frac{1}{x}dx

Integrating both sides,

\int{\frac{v-1}{v+1}}dv=\int{\frac{1}{x}}dx

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v-2ln(v+1)=lnx+C

Now, y = vx ⇒ v = y/x

\implies \frac{y}{x}-2ln(\frac{y}{x}+1)=lnx+C

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