Question and Answers Forum

All Questions      Topic List

None Questions

Previous in All Question      Next in All Question      

Previous in None      Next in None      

Question Number 22051 by FilupS last updated on 10/Oct/17

$$\mathrm{I}\mathrm{have}\mathrm{recently}\mathrm{seen}\mathrm{a}\mathrm{different}\mathrm{notation}$$$$\mathrm{for}\mathrm{integration},\mathrm{written}\mathrm{as}:$$$$\int dxf\left(x\right)$$$$e.g.$$$$\int dx{(x+1)}^2$$$$$$$$\mathrm{Is}\mathrm{this}\mathrm{the}\mathrm{same}\mathrm{as}:$$$$\int f\left(x\right)dx$$$$\Rightarrow =\int {(x+1)}^{2}dx$$$$???$$

Commented by Joel577 last updated on 10/Oct/17

$$Ithinkitissame$$

Commented by Joel577 last updated on 10/Oct/17

$$ormaybe(\int dx).f\left(x\right)$$

Commented by FilupS last updated on 10/Oct/17

$$\mathrm{I}{\mathrm{don}}^{\prime }\mathrm{t}\mathrm{think}\mathrm{so}.$$$$\mathrm{Without}\mathrm{going}\mathrm{into}\mathrm{details},$$$$\mathrm{they}\mathrm{got}\mathrm{something}\mathrm{in}\mathrm{form}:$$$$\int dxf\left(x\right)=F\left(x\right)+c$$$$$$$$\mathrm{but}\mathrm{I}\mathrm{am}\mathrm{only}\mathrm{aware}\mathrm{of}\mathrm{the}\mathrm{form}:$$$$\int f\left(x\right)dx=F\left(x\right)+c$$$$\mathrm{to}\mathrm{me}:\int dxf\left(x\right)=(\int dx)\left(f\left(x\right)\right)$$$$\mathrm{whereas}:\int f\left(x\right)dx\ne (\int dx)\left(f\left(x\right)\right),\mathrm{because}:$$$$\int f\left(x\right)dx=\left(F\left(x\right)\right)(\int dx)$$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com