Question Number 74191 by Mr. K last updated on 20/Nov/19 $$\:\:\:\:\mathrm{9}{Y}\mathrm{4} \\ $$$$+\mathrm{75}{X} \\ $$$$\:\:\:\:{Z}\mathrm{86} \\ $$$$−−−− \\ $$$${W}\mathrm{387} \\ $$$${find}\:{X}+{Y}+{Z}+{W}. \\ $$ Answered by…
Question Number 8653 by tawakalitu last updated on 19/Oct/16 Answered by prakash jain last updated on 19/Oct/16 $$\mathrm{2sin}\:{x}+\mathrm{3cos}\:{y}=\mathrm{5} \\ $$$$\mathrm{sin}\:{x}\leqslant\mathrm{1} \\ $$$$\mathrm{cos}\:{y}\leqslant\mathrm{1} \\ $$$$\mathrm{If}\:\mathrm{2sin}\:{x}+\mathrm{3cos}\:{y}=\mathrm{5} \\…
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Question Number 8650 by tawakalitu last updated on 19/Oct/16 Commented by tawakalitu last updated on 19/Oct/16 $$\mathrm{please}\:\mathrm{reduce}\:\mathrm{to}\:\mathrm{echelon}\:\mathrm{form}. \\ $$ Commented by ridwan balatif last updated…
Question Number 8647 by tawakalitu last updated on 19/Oct/16 Commented by tawakalitu last updated on 19/Oct/16 $$\mathrm{please}\:\mathrm{reduce}\:\mathrm{the}\:\mathrm{following}\:\mathrm{into}\:\mathrm{echelon} \\ $$$$\mathrm{form}.\:\mathrm{the}\:\mathrm{above}\:\mathrm{equation}. \\ $$ Terms of Service Privacy…
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Question Number 74181 by MASANJAJ last updated on 19/Nov/19 Answered by Rio Michael last updated on 19/Nov/19 $$\mathrm{1}{cm}\:=\:\mathrm{500000}{cm} \\ $$$$\mathrm{1}{cm}\:=\:\mathrm{5}{km} \\ $$$$\:{x}\:=\:\mathrm{30}{km} \\ $$$$\mathrm{30}\:=\:\mathrm{5}{x} \\…
Question Number 8644 by prakash jain last updated on 19/Oct/16 $$\mathrm{Write}\:\mathrm{an}\:\mathrm{expression}\:\mathrm{involving} \\ $$$${e}\:\mathrm{and}\:\pi\:\mathrm{which}\:\mathrm{when}\:\mathrm{evaluated} \\ $$$$\mathrm{gives}\:\mathrm{result}\:\mathrm{1}. \\ $$ Commented by Yozzias last updated on 19/Oct/16 $$\mathrm{ee}^{−\mathrm{1}}…
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Question Number 139708 by qaz last updated on 30/Apr/21 $${Prove}:\:\:\:\mathrm{1}+\mathrm{2}\underset{{n}=\mathrm{1}} {\overset{\infty} {\sum}}{a}^{{n}} \mathrm{cos}\:\left({nx}\right)=\frac{\mathrm{1}−{a}^{\mathrm{2}} }{\mathrm{1}−\mathrm{2}{a}\mathrm{cos}\:{x}+{a}^{\mathrm{2}} },\:\:\:\:\:\:\left(\mid{a}\mid<\mathrm{1}\right) \\ $$$${And}\:{calculate}::\:\:\int_{\mathrm{0}} ^{\pi} \frac{{x}^{\mathrm{2}} }{\mathrm{1}+\mathrm{8sin}\:^{\mathrm{2}} {x}}{dx}=\frac{\mathrm{5}\pi^{\mathrm{3}} }{\mathrm{36}}−\frac{\pi}{\mathrm{6}}{ln}^{\mathrm{2}} \mathrm{2} \\ $$…