Category: Algebra

Question Number 1930 by Rasheed Soomro last updated on 24/Oct/15 $$f{}^{\prime }\left(x\right)-g\left(x\right)=0$$$$f\left(x\right)+g^{\prime }\left(x\right)=0$$$$f\left(x\right)=?$$$$g\left(x\right)=?$$ Answered by prakash jain last updated…

Question Number 1899 by Yozzy last updated on 22/Oct/15 $$Considerthesystemofequations$$$$2yz+zx-5xy=2$$$$yz-zx+2xy=1$$$$yz-2zx+6xy=3.$$$$Showthatxyz=\pm 6$$$$andfindthepossiblevalues$$$$ofx,yandz.$$ Commented…

Question Number 67413 by ozodbek last updated on 27/Aug/19 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 1838 by 112358 last updated on 11/Oct/15 $$Showthat$$$$\left(1\right)\frac{1}{sinz}=\frac{1}{z}+\underset{n=1}{\sum ^{\mathrm{\infty }}}{(-1)}^n(\frac{1}{z+n\pi }+\frac{1}{z-n\pi })$$$$\left(2\right)cotz=\frac{1}{z}+\underset{n=1}{\sum ^{\mathrm{\infty }}}(\frac{1}{z+n\pi }+\frac{1}{z-n\pi })$$$$wherez\ne m\pi ,m\in \mathbb{Z},giventhefactthat$$$${cosax}=\frac{\mathrm{2}{sina}\pi}{\pi}\left[\frac{\mathrm{1}}{\mathrm{2}{a}}+\underset{{n}=\mathrm{1}} {\overset{\infty} {\sum}}\left(\frac{\left(−\mathrm{1}\right)^{{n}}…

Question Number 132900 by aurpeyz last updated on 17/Feb/21 $$apinholecameraisplaced300cm$$$$infrontofabuildingsothattheimage$$$$isformedonascreen5cmfromthe$$$$pinhole.iftheimageis2.5cmhigh.$$$$theheightofthebuildingwillbe?$$ Commented by mr W last…