Question Number 135976 by I want to learn more last updated on 17/Mar/21 Answered by mr W last updated on 17/Mar/21 $$\frac{{x}}{\mathrm{sin}\:\mathrm{90}°}=\frac{\mathrm{2}}{\mathrm{sin}\:\angle{ADC}}\:\:\:\:…\left({i}\right) \\ $$$$\frac{\mathrm{sin}\:\mathrm{30}°}{\mathrm{3}}=\frac{\mathrm{sin}\:\angle{BDC}}{{y}}\:\:\:…\left({ii}\right) \\…
Question Number 4905 by 123456 last updated on 20/Mar/16 $${f}\left({x}\right)=\mathrm{0}\:\mathrm{is}\:\mathrm{a}\:\mathrm{even}\:\mathrm{function}\:\mathrm{or}\:\mathrm{a}\:\mathrm{odd}\:\mathrm{function}? \\ $$ Commented by Yozzii last updated on 20/Mar/16 $${This}\:{is}\:{indeterminate}\:{I}\:{think}\:{since}\:{f}\left({x}\right)=\mathrm{0} \\ $$$${satisfies}\:{both}\:{f}\left({x}\right)=−{f}\left({x}\right)=\mathrm{0} \\ $$$${and}\:{f}\left(−{x}\right)=\mathrm{0}={f}\left({x}\right). \\…
Question Number 4904 by love math last updated on 20/Mar/16 $${Determine}\:{the}\:{smallest}\:{natural} \\ $$$${value}\:{of}\:{n},\:{so}\:{the}\:{function}\: \\ $$$${y}=\:\mathrm{5}{x}\:{sin}\:\mathrm{5}{nx}\:{will}\:{be}\:{even}. \\ $$ Commented by Yozzii last updated on 20/Mar/16 $${y}\left(−{x}\right)=\mathrm{5}\left(−{x}\right){sin}\left(−\mathrm{5}{nx}\right)…
Question Number 135974 by liberty last updated on 17/Mar/21 $$ \\ $$How do you solve for 2cos^3(x) + sinx – 3sin^2 (x) cos(x) =0? Commented…
Question Number 4900 by prakash jain last updated on 19/Mar/16 $$\int_{{n}} ^{\:{n}+\mathrm{1}} {f}\left({x}\right)\mathrm{d}{x},\:{n}\in\mathbb{N} \\ $$$${where}\:{f}\left({x}\right)=\underset{{i}=\mathrm{0}} {\overset{{n}+\mathrm{1}} {\prod}}\left({x}−{i}\right) \\ $$$$\mathrm{Can}\:\mathrm{this}\:\mathrm{be}\:\mathrm{integrated}\:\mathrm{with}\:\mathrm{evaluating}\:\mathrm{the} \\ $$$$\mathrm{product}? \\ $$ Commented by…
Question Number 135971 by Raxreedoroid last updated on 17/Mar/21 $$ \\ $$$$\mathrm{Let}\:{R}\left({n},{m}\right)={R}\left({n}−\mathrm{1},{m}\right)+{R}\left({n}−\mathrm{1},{m}−\mathrm{1}\right) \\ $$$$\mathrm{if}\:{R}\left(\mathrm{1},\mathrm{1}\right)=−\mathrm{6},{R}\left(\mathrm{2},\mathrm{1}\right)=\mathrm{8},{R}\left(\mathrm{3},\mathrm{1}\right)=−\mathrm{1} \\ $$$$\mathrm{and}\:\forall{t}\:{R}\left(\mathrm{4},{t}\right)=\mathrm{0} \\ $$$$ \\ $$$$ \\ $$$$\left.{a}\right)\:\mathrm{Find}\:{R}\left(\mathrm{1},\mathrm{21}\right) \\ $$$$ \\…
Question Number 4897 by 123456 last updated on 19/Mar/16 $${f}\left({x}\right)=\mathrm{10sin}\:{x} \\ $$$${g}\left({x}\right)={x}^{\mathrm{2}} −\mathrm{5}{x}+\mathrm{1} \\ $$$${h}\left({x}\right)=\mathrm{3}{x}^{\mathrm{2}} −\mathrm{2}{x}+\mathrm{1} \\ $$$${h}\left({g}\left({f}\left({x}\right)\right)\right)=\mathrm{0} \\ $$$${x}=??? \\ $$ Commented by prakash…
Question Number 135965 by liberty last updated on 17/Mar/21 $${Vector} \\ $$Three vectors satisfy a.b = b.c = c.a = -1 and a + b…
Question Number 70429 by TawaTawa last updated on 04/Oct/19 Commented by TawaTawa last updated on 04/Oct/19 If ABCD is a square, AH is the tangent of the sector BEF at G, AG:GH = 7, and DH = 2. Find the area of the square Commented by MJS last updated on 04/Oct/19 $${AG}:{GH}=\mathrm{7}???…
Question Number 135963 by liberty last updated on 17/Mar/21 $$ \\ $$how many of the first triangular number have the ones zero Terms of Service…