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Question Number 96604 by Rio Michael last updated on 03/Jun/20

Please how will you evaluate   ∫ (√dx) ???

$$\mathrm{Please}\:\mathrm{how}\:\mathrm{will}\:\mathrm{you}\:\mathrm{evaluate} \\ $$$$\:\int\:\sqrt{{dx}}\:??? \\ $$

Commented by MJS last updated on 03/Jun/20

it′s an error of syntax. “dx” has to be the last  term of an integral. “dx” can never be a  part of the term you want to integrate.  ∫dx is a short cut for ∫1dx; ∫(dx/(...)) is short  for ∫(1/(...))dx  but  ∫((...)/dx); ∫_dx ...; ∫dx^n ; generally ∫f(dx) are all  meaningless

$$\mathrm{it}'\mathrm{s}\:\mathrm{an}\:\mathrm{error}\:\mathrm{of}\:\mathrm{syntax}.\:``{dx}''\:\mathrm{has}\:\mathrm{to}\:\mathrm{be}\:\mathrm{the}\:\mathrm{last} \\ $$$$\mathrm{term}\:\mathrm{of}\:\mathrm{an}\:\mathrm{integral}.\:``{dx}''\:\mathrm{can}\:\mathrm{never}\:\mathrm{be}\:\mathrm{a} \\ $$$$\mathrm{part}\:\mathrm{of}\:\mathrm{the}\:\mathrm{term}\:\mathrm{you}\:\mathrm{want}\:\mathrm{to}\:\mathrm{integrate}. \\ $$$$\int{dx}\:\mathrm{is}\:\mathrm{a}\:\mathrm{short}\:\mathrm{cut}\:\mathrm{for}\:\int\mathrm{1}{dx};\:\int\frac{{dx}}{...}\:\mathrm{is}\:\mathrm{short} \\ $$$$\mathrm{for}\:\int\frac{\mathrm{1}}{...}{dx} \\ $$$$\mathrm{but} \\ $$$$\int\frac{...}{{dx}};\:\underset{{dx}} {\int}...;\:\int{dx}^{{n}} ;\:\mathrm{generally}\:\int{f}\left({dx}\right)\:\mathrm{are}\:\mathrm{all} \\ $$$$\mathrm{meaningless} \\ $$

Commented by prakash jain last updated on 03/Jun/20

Hi Rio, for fraction derivative study you can begin by reading wikipedia article https://en.m.wikipedia.org/wiki/Fractional_calculus

Commented by prakash jain last updated on 03/Jun/20

(d^(1/2) /dx^(1/2) )(√x)=((√π)/2)  ∫(√dx)=∫d^(1/2) x=(2/(√π))(√x)

$$\frac{{d}^{\mathrm{1}/\mathrm{2}} }{{dx}^{\mathrm{1}/\mathrm{2}} }\sqrt{{x}}=\frac{\sqrt{\pi}}{\mathrm{2}} \\ $$$$\int\sqrt{{dx}}=\int{d}^{\mathrm{1}/\mathrm{2}} {x}=\frac{\mathrm{2}}{\sqrt{\pi}}\sqrt{{x}} \\ $$

Commented by MJS last updated on 03/Jun/20

I know about fractional derivates and  integrals but I think most of these questions  in here are rather typos

$$\mathrm{I}\:\mathrm{know}\:\mathrm{about}\:\mathrm{fractional}\:\mathrm{derivates}\:\mathrm{and} \\ $$$$\mathrm{integrals}\:\mathrm{but}\:\mathrm{I}\:\mathrm{think}\:\mathrm{most}\:\mathrm{of}\:\mathrm{these}\:\mathrm{questions} \\ $$$$\mathrm{in}\:\mathrm{here}\:\mathrm{are}\:\mathrm{rather}\:\mathrm{typos} \\ $$

Commented by Rio Michael last updated on 03/Jun/20

thank you sir i will check it out.

$$\mathrm{thank}\:\mathrm{you}\:\mathrm{sir}\:\mathrm{i}\:\mathrm{will}\:\mathrm{check}\:\mathrm{it}\:\mathrm{out}. \\ $$

Commented by Rio Michael last updated on 03/Jun/20

Sir i think there′s  just some way to solve  it, just some way to solve it..an i′m guessing  fractional integral should work.

$$\mathrm{Sir}\:\mathrm{i}\:\mathrm{think}\:\mathrm{there}'\mathrm{s}\:\:\mathrm{just}\:\mathrm{some}\:\mathrm{way}\:\mathrm{to}\:\mathrm{solve} \\ $$$$\mathrm{it},\:\mathrm{just}\:\mathrm{some}\:\mathrm{way}\:\mathrm{to}\:\mathrm{solve}\:\mathrm{it}..\mathrm{an}\:\mathrm{i}'\mathrm{m}\:\mathrm{guessing} \\ $$$$\mathrm{fractional}\:\mathrm{integral}\:\mathrm{should}\:\mathrm{work}. \\ $$

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