Category: Algebra

Question Number 181066 by Shrinava last updated on 21/Nov/22 $$\mathrm{Find}\mathrm{the}\mathrm{value}\mathrm{of}\mathrm{the}\mathrm{expression}:$$$$2\mathrm{arcctg}\left(\mathrm{tg}3\right)-3\mathrm{arctg}\left(\mathrm{ctg}2\right)$$$$\mathrm{a})2\pi -3\mathrm{b})12\mathrm{c})-6\mathrm{d})\pi -4/2\mathrm{e})3\pi /2$$ Commented by mr W last updated on 22/Nov/22 $${all}\:{answers}\:{given}\:{are}\:{wrong}!…

Question Number 181020 by mr W last updated on 20/Nov/22 $$solveforx>0$$$${\int }_0^x\lfloor t{\rfloor }^{2}dt=2(x-1)$$$$$$$$\left(Q180780reposted\right)$$ Answered by mr…

Question Number 181007 by mr W last updated on 20/Nov/22 $$\left[QuestionfromFrixsir\right]$$$$\dots \mathrm{I}\mathrm{once}\mathrm{played}\mathrm{the}\mathrm{game}\mathrm{Tetris}.$$$$\mathrm{You}\mathrm{got}\mathrm{points}\mathrm{for}\mathrm{each}\mathrm{filled}\mathrm{line},$$$$\mathrm{depending}\mathrm{on}\mathrm{how}\mathrm{many}\mathrm{lines}\mathrm{you}$$$$\mathrm{filled}\mathrm{at}\mathrm{once}:$$$$1\mathrm{line}=1\mathrm{point}$$$$2\mathrm{lines}=3\mathrm{points}$$$$\mathrm{3}\:\mathrm{lines}\:=\:\mathrm{6}\:\mathrm{points}…

Question Number 115436 by frc2crc last updated on 25/Sep/20 $$\sqrt{\sqrt[3]{a}+\sqrt[3]{b}}=\frac{1}{\sqrt{b-a\times s^3}}(\frac{-s^2\times \sqrt[3]{a^2}}{2}+s\sqrt[3]{ab}+\sqrt[3]{b^2})$$$$whatiss?$$ Answered by MJS_new last updated on 25/Sep/20…

Question Number 180943 by Shrinava last updated on 19/Nov/22 $$\mathrm{if}:\overline{\mathrm{a},\mathrm{bc}}=1+\frac{1}{2}+\frac{3}{50}$$$$\mathrm{find}:\mathrm{a}+\mathrm{b}+\mathrm{c}=?$$ Answered by mahdipoor last updated on 19/Nov/22 $$1+\frac{1}{2}+\frac{3}{50}=1.56$$$$\mathrm{1}+\mathrm{5}+\mathrm{6}=\mathrm{12}…