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1.∫dx/logx what will value of the intigarl Rgcb .oith lgfh boryi kgyjc gegv

1.∫dx/logx  what will value of the intigarl
Rgcb .oith lgfh boryi kgyjc gegv

Grade:10

2 Answers

Anish Singhal
askIITians Faculty 1192 Points
5 years ago
Well, the logarithmic integral is given by -

∫1log(x)dx=li(x)∫1log(x)dx=li(x)

which is a special function known as the integral logarithm.

It can also be represented as -

∫1log(x)dx=∫1log(x)dx=

Lett=log(x)which can also be written ase^t=x
Therefore on differentiatingt=log(x)on both sides we get,

dt=xdx

or,dx=xdt→dx=etdt

∫1log(x)dx=∫e^t/tdt

which givesEi(t)+c

i.eEi(log(x))+c

HereEi is an exponential integral.
Anish Singhal
askIITians Faculty 1192 Points
5 years ago
Well, the logarithmic integral is given by -

∫1log(x)dx=li(x)∫1log(x)dx=li(x)

which is a special function known as the integral logarithm.

It can also be represented as -

∫1log(x)dx=∫1log(x)dx=

Lett=log(x)which can also be written ase^t=x
Therefore on differentiatingt=log(x)on both sides we get,

dt=xdx

or,dx=xdt→dx=etdt

∫1log(x)dx=∫e^t/tdt

which givesEi(t)+c

i.eEi(log(x))+c

HereEi is an exponential integral.

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