Menu Close

Category: Integration

dx-x-2-x-1-

Question Number 20238 by tammi last updated on 24/Aug/17 $$\int\frac{{dx}}{{x}^{\mathrm{2}} −{x}+\mathrm{1}} \\ $$ Commented by tammi last updated on 24/Aug/17 $${this}\:{answer}\:{is}\frac{\mathrm{2}}{\:\sqrt{\mathrm{3}}}\mathrm{tan}^{−\mathrm{1}} \left(\frac{\mathrm{2}{x}−\mathrm{1}}{\:\sqrt{\mathrm{3}}}\right)+{c} \\ $$$${i}\:{know}\:{the}\:{answer}\:{but}\:{can}\:{not}\:{solve}\:{this}\:{prblm}..{help} \\…

Question-20230

Question Number 20230 by ajfour last updated on 24/Aug/17 Commented by ajfour last updated on 27/Aug/17 $${Find}\:{the}\:{area}\:{of}\:{that}\:{part}\:{of}\:{the} \\ $$$${surface}\:{of}\:{the}\:{sphere}\:: \\ $$$${x}^{\mathrm{2}} +{y}^{\mathrm{2}} +{z}^{\mathrm{2}} ={a}^{\mathrm{2}} \:{which}\:{is}\:{cut}\:{out}\:{by}…

Is-definite-integral-can-have-negative-value-Because-I-think-a-b-f-x-dx-is-total-area-below-graph-f-x-from-x-a-until-x-b-so-it-can-t-be-negative-

Question Number 20202 by Joel577 last updated on 24/Aug/17 $$\mathrm{Is}\:\mathrm{definite}\:\mathrm{integral}\:\mathrm{can}\:\mathrm{have}\:\mathrm{negative}\:\mathrm{value}? \\ $$$$\mathrm{Because}\:\mathrm{I}\:\mathrm{think}\:\int_{{a}} ^{{b}} {f}\left({x}\right)\:{dx}\:\mathrm{is}\:\mathrm{total}\:\mathrm{area}\:\mathrm{below} \\ $$$$\mathrm{graph}\:{f}\left({x}\right)\:\mathrm{from}\:{x}\:=\:{a}\:\mathrm{until}\:{x}\:=\:{b},\:\mathrm{so}\:\mathrm{it}\:\mathrm{can}'\mathrm{t} \\ $$$$\mathrm{be}\:\mathrm{negative} \\ $$ Commented by ajfour last updated…

r-1-1-r-1-r-r-2-1-4-r-2-1-4-

Question Number 151268 by rs4089 last updated on 19/Aug/21 $$\underset{{r}=\mathrm{1}} {\overset{\infty} {\sum}}\frac{\left(−\mathrm{1}\right)^{{r}−\mathrm{1}} }{{r}}\left[\psi\left(\frac{{r}}{\mathrm{2}}+\frac{\mathrm{1}}{\mathrm{4}}\right)−\psi\left(\frac{{r}}{\mathrm{2}}−\frac{\mathrm{1}}{\mathrm{4}}\right)\right] \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com