Math, asked by jass137, 8 months ago

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Answers

Answered by Anonymous
287

Step-by-step explanation:

\huge\mathfrak\green{\bold{\underline{☘{ ℘ɧεŋσɱεŋศɭ}☘}}}

\red{\bold{\underline{\underline{❥Question᎓}}}}integrate the function :

 \frac{1}{x + xlogx}

\huge\huge\tt\blue{「Answer」</p><p> }

╔════════════════════════╗

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _✍️

⟹ \frac{1}{x + xlogx}  =  \frac{1}{x(1 + logx)} </p><p>

Let 1+logx=t

Differentiating both sides w.r.t.x

⟹</p><p>0 +  \frac{1}{x}  =  \frac{dt}{dx}

⟹</p><p> \frac{1}{x}  =  \frac{dt}{dx}

dx = xdt

Integrating function:-

⟹∫ \frac{1}{x + xlogx} dx = ∫ \frac{1}{x(1 + logx)} dx</p><p>

Putting 1+logx & dx =xdt

 = ∫ \frac{1}{x(t)} dt \times x = ∫ \frac{1}{t} dt

 = log |t|  + c

Put t=1+logx

 = log |1 + logx|  + c

╚════════════════════════╝

нσρє ıт нєłρs yσυ

_____________________

тнαηkyσυ

Answered by pragatisharma2
1

Answer:

Question᎓

integrate the function :

\frac{1}{x + xlogx}

x+xlogx

1

\huge\huge\tt\blue{「Answer」 }「Answer」

╔════════════════════════╗

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _✍️

⟹ \frac{1}{x + xlogx} = \frac{1}{x(1 + logx)}⟹

x+xlogx

1

=

x(1+logx)

1

Let 1+logx=t

Differentiating both sides w.r.t.x

⟹ 0 + \frac{1}{x} = \frac{dt}{dx}⟹0+

x

1

=

dx

dt

⟹ \frac{1}{x} = \frac{dt}{dx}⟹

x

1

=

dx

dt

dx = xdtdx=xdt

Integrating function:-

⟹∫ \frac{1}{x + xlogx} dx = ∫ \frac{1}{x(1 + logx)} dx⟹∫

x+xlogx

1

dx=∫

x(1+logx)

1

dx

Putting 1+logx & dx =xdt

= ∫ \frac{1}{x(t)} dt \times x = ∫ \frac{1}{t} dt=∫

x(t)

1

dt×x=∫

t

1

dt

= log |t| + c=log∣t∣+c

Put t=1+logx

= log |1 + logx| + c=log∣1+logx∣+c

╚════════════════════════╝

нσρє ıт нєłρs yσυ

_____________________

тнαηkyσυ

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