Question and Answers Forum

All Questions   Topic List

AllQuestion and Answers: Page 1270

Question Number 76108    Answers: 1   Comments: 1

Question Number 76098    Answers: 2   Comments: 0

Question Number 76122    Answers: 4   Comments: 0

Question Number 76090    Answers: 1   Comments: 1

Question Number 76088    Answers: 0   Comments: 2

Question Number 76087    Answers: 1   Comments: 0

Question Number 76086    Answers: 0   Comments: 0

what is minimal expression for sin (π/k) cos (π/k), tan (π/k), cosec (π/k),sec (π/k)and cot (π/k)

$${what}\:{is}\:{minimal}\:{expression}\:{for}\:\mathrm{sin}\:\frac{\pi}{{k}}\: \\ $$$$\mathrm{cos}\:\frac{\pi}{{k}},\:\mathrm{tan}\:\frac{\pi}{{k}},\:\mathrm{cosec}\:\frac{\pi}{{k}},\mathrm{sec}\:\frac{\pi}{{k}}{and}\:\mathrm{cot}\:\frac{\pi}{{k}} \\ $$

Question Number 76075    Answers: 1   Comments: 0

how i evaluate sin(π/7)×sin(2π/7)×sin(3π/7) please help me

$$\mathrm{how}\:\mathrm{i}\:\mathrm{evaluate}\:\mathrm{sin}\left(\pi/\mathrm{7}\right)×\mathrm{sin}\left(\mathrm{2}\pi/\mathrm{7}\right)×\mathrm{sin}\left(\mathrm{3}\pi/\mathrm{7}\right)\: \\ $$$$\mathrm{please}\:\mathrm{help}\:\mathrm{me} \\ $$

Question Number 76061    Answers: 1   Comments: 0

What′s the minimum value of ((13a+13b+2c)/(2a+2b))+((24a−b+13c)/(2b+2c))+((−a+24b+13c)/(2a+2c))? (a,b,c are positive numbers.) I think nobody can solve this.

$$\mathrm{What}'\mathrm{s}\:\mathrm{the}\:\mathrm{minimum}\:\mathrm{value}\:\mathrm{of} \\ $$$$\frac{\mathrm{13}{a}+\mathrm{13}{b}+\mathrm{2}{c}}{\mathrm{2}{a}+\mathrm{2}{b}}+\frac{\mathrm{24}{a}−{b}+\mathrm{13}{c}}{\mathrm{2}{b}+\mathrm{2}{c}}+\frac{−{a}+\mathrm{24}{b}+\mathrm{13}{c}}{\mathrm{2}{a}+\mathrm{2}{c}}? \\ $$$$\left({a},{b},{c}\:\mathrm{are}\:\mathrm{positive}\:\mathrm{numbers}.\right) \\ $$$$\mathrm{I}\:\mathrm{think}\:\mathrm{nobody}\:\mathrm{can}\:\mathrm{solve}\:\mathrm{this}. \\ $$

Question Number 76053    Answers: 1   Comments: 2

how I calculate ∫(1/(x^8 +x^2 ))dx ?

$${how}\:{I}\:{calculate}\:\int\frac{\mathrm{1}}{{x}^{\mathrm{8}} +{x}^{\mathrm{2}} }{dx}\:? \\ $$

Question Number 76052    Answers: 0   Comments: 1

Question Number 76048    Answers: 2   Comments: 0

∫e^x^2 dx

$$\int{e}^{{x}^{\mathrm{2}} } {dx} \\ $$

Question Number 76038    Answers: 1   Comments: 0

Question Number 76037    Answers: 1   Comments: 0

Prove That sin 3°sin 39°sin 75°=sin 9°sin 24°sin 30°

$${Prove}\:{That} \\ $$$$\mathrm{sin}\:\mathrm{3}°\mathrm{sin}\:\mathrm{39}°\mathrm{sin}\:\mathrm{75}°=\mathrm{sin}\:\mathrm{9}°\mathrm{sin}\:\mathrm{24}°\mathrm{sin}\:\mathrm{30}° \\ $$

Question Number 76034    Answers: 1   Comments: 0

53^(log_x (7)) = (√x) x = ?

$$\: \\ $$$$\:\mathrm{53}^{\boldsymbol{\mathrm{log}}_{\boldsymbol{\mathrm{x}}} \left(\mathrm{7}\right)} \:=\:\sqrt{\boldsymbol{\mathrm{x}}} \\ $$$$\: \\ $$$$\:\boldsymbol{\mathrm{x}}\:=\:? \\ $$$$\: \\ $$

Question Number 76032    Answers: 0   Comments: 0

Question Number 76015    Answers: 0   Comments: 0

Question Number 76014    Answers: 0   Comments: 0

Question Number 76013    Answers: 1   Comments: 0

Question Number 76012    Answers: 1   Comments: 0

show that 1−3sin^2 xcos^2 x=(5/8)+(3/8)cos4x

$$\mathrm{show}\:\mathrm{that}\: \\ $$$$\mathrm{1}−\mathrm{3sin}^{\mathrm{2}} {x}\mathrm{cos}^{\mathrm{2}} {x}=\frac{\mathrm{5}}{\mathrm{8}}+\frac{\mathrm{3}}{\mathrm{8}}\boldsymbol{\mathrm{cos}}\mathrm{4}\boldsymbol{{x}} \\ $$

Question Number 76009    Answers: 1   Comments: 0

hiw do i solve 2^x = 4x?

$${hiw}\:{do}\:{i}\:{solve} \\ $$$$\mathrm{2}^{{x}} \:=\:\mathrm{4}{x}? \\ $$

Question Number 76003    Answers: 1   Comments: 0

22+2

$$\mathrm{22}+\mathrm{2} \\ $$

Question Number 75991    Answers: 1   Comments: 1

Question Number 75990    Answers: 0   Comments: 0

Question Number 75989    Answers: 0   Comments: 0

Question Number 75988    Answers: 0   Comments: 3

  Pg 1265      Pg 1266      Pg 1267      Pg 1268      Pg 1269      Pg 1270      Pg 1271      Pg 1272      Pg 1273      Pg 1274   

Terms of Service

Privacy Policy

Contact: info@tinkutara.com