Question and Answers Forum

All Questions   Topic List

OthersQuestion and Answers: Page 19

Question Number 182069    Answers: 1   Comments: 1

(1+x^2 )(dy/dx)+3xy=5x solve

$$\left(\mathrm{1}+\mathrm{x}^{\mathrm{2}} \right)\frac{\mathrm{dy}}{\mathrm{dx}}+\mathrm{3xy}=\mathrm{5x} \\ $$$$ \\ $$$$\mathrm{solve} \\ $$

Question Number 182031    Answers: 0   Comments: 0

Question Number 181977    Answers: 0   Comments: 0

Question Number 181764    Answers: 3   Comments: 0

(dy/dx)+cos(x)y=cos(x) Solve

$$\frac{\mathrm{dy}}{\mathrm{dx}}+\mathrm{cos}\left(\mathrm{x}\right)\mathrm{y}=\mathrm{cos}\left(\mathrm{x}\right) \\ $$$$ \\ $$$$\mathrm{Solve} \\ $$$$ \\ $$

Question Number 181758    Answers: 0   Comments: 0

How likely have at least two of 23 student birthday on the same day? M.m

$$\mathrm{How}\:\mathrm{likely}\:\mathrm{have}\:\mathrm{at}\:\mathrm{least}\:\mathrm{two}\:\mathrm{of}\:\mathrm{23} \\ $$$$\mathrm{student}\:\mathrm{birthday}\:\mathrm{on}\:\mathrm{the}\:\mathrm{same}\:\mathrm{day}? \\ $$$$ \\ $$$$\mathrm{M}.\mathrm{m} \\ $$

Question Number 181757    Answers: 1   Comments: 0

What is the largest digit of 11^5 ∙17^3 ∙33^3 .

$$\mathrm{What}\:\mathrm{is}\:\mathrm{the}\:\mathrm{largest}\:\mathrm{digit}\:\mathrm{of}\:\mathrm{11}^{\mathrm{5}} \centerdot\mathrm{17}^{\mathrm{3}} \centerdot\mathrm{33}^{\mathrm{3}} \\ $$$$ \\ $$$$. \\ $$

Question Number 181756    Answers: 2   Comments: 0

Without using calculator, what is the value of Cos(((7π)/6))? .

$$\mathrm{Without}\:\mathrm{using}\:\mathrm{calculator},\:\mathrm{what}\:\mathrm{is}\:\mathrm{the} \\ $$$$\mathrm{value}\:\mathrm{of}\:\mathrm{Cos}\left(\frac{\mathrm{7}\pi}{\mathrm{6}}\right)? \\ $$$$ \\ $$$$. \\ $$

Question Number 181755    Answers: 1   Comments: 2

Find the point of intersection (x,y) of f(x)=2x−3 and g(x)=−x^3 . .

$$\mathrm{Find}\:\mathrm{the}\:\mathrm{point}\:\mathrm{of}\:\mathrm{intersection}\:\left(\mathrm{x},\mathrm{y}\right) \\ $$$$\mathrm{of}\:\mathrm{f}\left(\mathrm{x}\right)=\mathrm{2x}−\mathrm{3}\:\mathrm{and}\:\mathrm{g}\left(\mathrm{x}\right)=−\mathrm{x}^{\mathrm{3}} . \\ $$$$ \\ $$$$. \\ $$

Question Number 181743    Answers: 1   Comments: 0

(dy/dx)+xy=xy^2 Solve

$$\frac{\mathrm{dy}}{\mathrm{dx}}+\mathrm{xy}=\mathrm{xy}^{\mathrm{2}} \\ $$$$ \\ $$$$\mathrm{Solve} \\ $$

Question Number 181735    Answers: 2   Comments: 0

∫(1/( (√(1+x^2 ))−2x))dx

$$\int\frac{\mathrm{1}}{\:\sqrt{\mathrm{1}+\mathrm{x}^{\mathrm{2}} }−\mathrm{2x}}\mathrm{dx} \\ $$

Question Number 181723    Answers: 1   Comments: 0

(dy/dx)=((xy^2 +2y^3 )/(x^3 +x^2 y+xy^2 )) Solve

$$\frac{\mathrm{dy}}{\mathrm{dx}}=\frac{\mathrm{xy}^{\mathrm{2}} +\mathrm{2y}^{\mathrm{3}} }{\mathrm{x}^{\mathrm{3}} +\mathrm{x}^{\mathrm{2}} \mathrm{y}+\mathrm{xy}^{\mathrm{2}} } \\ $$$$ \\ $$$$\mathrm{Solve} \\ $$$$ \\ $$

Question Number 181750    Answers: 0   Comments: 1

∫xe^(x^2 +x) dx .

$$\int\mathrm{xe}^{\mathrm{x}^{\mathrm{2}} +\mathrm{x}} \mathrm{dx} \\ $$$$ \\ $$$$. \\ $$

Question Number 181681    Answers: 0   Comments: 0

Question Number 181618    Answers: 2   Comments: 0

(dy/dx)+2xy=x^2 y(0)=3 Solve .

$$\frac{\mathrm{dy}}{\mathrm{dx}}+\mathrm{2xy}=\mathrm{x}^{\mathrm{2}} \:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{y}\left(\mathrm{0}\right)=\mathrm{3} \\ $$$$ \\ $$$$\mathrm{Solve} \\ $$$$ \\ $$$$. \\ $$

Question Number 181617    Answers: 0   Comments: 0

Solve: x(dy/dx)+(x+1)y=e^x^2 .

$$\mathrm{Solve}: \\ $$$$\mathrm{x}\frac{\mathrm{dy}}{\mathrm{dx}}+\left(\mathrm{x}+\mathrm{1}\right)\mathrm{y}=\mathrm{e}^{\mathrm{x}^{\mathrm{2}} } \\ $$$$ \\ $$$$. \\ $$

Question Number 181615    Answers: 1   Comments: 0

Determine whether this is Homogenous or not (dy/dx)=(y/(y−2x)) .

$$\mathrm{Determine}\:\mathrm{whether}\:\mathrm{this}\:\mathrm{is}\:\mathrm{Homogenous} \\ $$$$\mathrm{or}\:\mathrm{not} \\ $$$$\frac{\mathrm{dy}}{\mathrm{dx}}=\frac{\mathrm{y}}{\mathrm{y}−\mathrm{2x}} \\ $$$$ \\ $$$$. \\ $$

Question Number 181613    Answers: 1   Comments: 0

(dy/dx)=((xy+y^2 )/x^2 ) y(−1)=2 .

$$\frac{\mathrm{dy}}{\mathrm{dx}}=\frac{\mathrm{xy}+\mathrm{y}^{\mathrm{2}} }{\mathrm{x}^{\mathrm{2}} }\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{y}\left(−\mathrm{1}\right)=\mathrm{2} \\ $$$$ \\ $$$$. \\ $$

Question Number 181219    Answers: 1   Comments: 0

Solve the D.E x(dy/dx)−y=(√(x^2 +y^2 )) .

$$\mathrm{Solve}\:\mathrm{the}\:\mathrm{D}.\mathrm{E} \\ $$$$\mathrm{x}\frac{\mathrm{dy}}{\mathrm{dx}}−\mathrm{y}=\sqrt{\mathrm{x}^{\mathrm{2}} +\mathrm{y}^{\mathrm{2}} } \\ $$$$ \\ $$$$. \\ $$

Question Number 181218    Answers: 1   Comments: 0

Solve the Differential equation: x(dy/dx)−y=2y(lnx−lny) .

$$\mathrm{Solve}\:\mathrm{the}\:\mathrm{Differential}\:\mathrm{equation}: \\ $$$$\mathrm{x}\frac{\mathrm{dy}}{\mathrm{dx}}−\mathrm{y}=\mathrm{2y}\left(\mathrm{lnx}−\mathrm{lny}\right) \\ $$$$ \\ $$$$. \\ $$

Question Number 181217    Answers: 1   Comments: 0

Question Number 181023    Answers: 1   Comments: 0

Question Number 181245    Answers: 1   Comments: 7

(x−(1/x))(x^(4/3) +x^(2/3) )=x^(1/3) (x^2 −(1/x^2 )) prove LHS=RHS

$$\left(\mathrm{x}−\frac{\mathrm{1}}{\mathrm{x}}\right)\left(\mathrm{x}^{\frac{\mathrm{4}}{\mathrm{3}}} +\mathrm{x}^{\frac{\mathrm{2}}{\mathrm{3}}} \right)=\mathrm{x}^{\frac{\mathrm{1}}{\mathrm{3}}} \left(\mathrm{x}^{\mathrm{2}} −\frac{\mathrm{1}}{\mathrm{x}^{\mathrm{2}} }\right) \\ $$$$ \\ $$$$\mathrm{prove}\:\mathrm{LHS}=\mathrm{RHS} \\ $$

Question Number 181015    Answers: 1   Comments: 0

If z=xy−7x+4y, evaluate (∂z/(∂x )) and (∂z/∂y) .

$$\mathrm{If}\:\mathrm{z}=\mathrm{xy}−\mathrm{7x}+\mathrm{4y},\:\:\:\mathrm{evaluate}\:\frac{\partial\mathrm{z}}{\partial\mathrm{x}\:}\:\mathrm{and}\:\frac{\partial\mathrm{z}}{\partial\mathrm{y}} \\ $$$$ \\ $$$$. \\ $$$$ \\ $$

Question Number 181014    Answers: 0   Comments: 5

If f(x)=3−x^2 , find ((f(3+h)−f(3))/h) .

$$\mathrm{If}\:\mathrm{f}\left(\mathrm{x}\right)=\mathrm{3}−\mathrm{x}^{\mathrm{2}} ,\:\:\:\:\mathrm{find}\:\frac{\mathrm{f}\left(\mathrm{3}+\mathrm{h}\right)−\mathrm{f}\left(\mathrm{3}\right)}{\mathrm{h}} \\ $$$$ \\ $$$$. \\ $$

Question Number 180976    Answers: 2   Comments: 0

(dy/dx)=((x−y−2)/(x+y+6)) solve

$$\frac{\mathrm{dy}}{\mathrm{dx}}=\frac{\mathrm{x}−\mathrm{y}−\mathrm{2}}{\mathrm{x}+\mathrm{y}+\mathrm{6}} \\ $$$$ \\ $$$$\mathrm{solve} \\ $$

Question Number 180954    Answers: 1   Comments: 0

A tugboat is travelling from Asaba to Onitsha across the River Niger with a resultant velocity of 20 knots. If the river flows at 12 knots, the direction of motion of the boat relative to the direction of water flow is?

A tugboat is travelling from Asaba to Onitsha across the River Niger with a resultant velocity of 20 knots. If the river flows at 12 knots, the direction of motion of the boat relative to the direction of water flow is?

  Pg 14      Pg 15      Pg 16      Pg 17      Pg 18      Pg 19      Pg 20      Pg 21      Pg 22      Pg 23   

Terms of Service

Privacy Policy

Contact: info@tinkutara.com