Recent questions tagged engineering-mathematics

Periodic function $f(x)$ is given below.\[f(x)=\left\{\begin{array}{lll}-1, & \text{when} & -\pi < x < 0 \\1, & \text{when} & 0 < x < \pi\end{array}\right\};\; f(x+2\pi)...

A partial differential equation is given below.\[\frac{\partial^{2} u}{\partial x^{2}}-\frac{\partial^{2} u}{\partial y^{2}}=0\]Possible solution(s) is/are:$(x+y)^{5}$$(x...

Let $f(x)=\left|\begin{array}{ccc}x^{3} & \sin x & \cos x \\ 6 & -1 & 0 \\ p & p^{2} & p^{3}\end{array}\right|$ where $p$ is a constant.The value of $\dfrac{d^{3}}{d x^{3...

Vector field $\vec{V}$ is defined as\[\vec{V}=3 x^{2} y z \hat{\imath}-5 x y \hat{\jmath}+6 y z^{2} \hat{k}\]The curl of $\vec{V}$ at point $(2,-1,1)$ is$6 \hat{\imath}-1...

An ordinary differential equation is given below.\[x^{2} \frac{d^{2} y}{d x^{2}}=6 y\]Considering $a$ and $b$ as arbitrary constants, the general solution of the equation...

The following consecutive readings (in m) were taken with a dumpy level and a levelling staff at a common interval of $20$ m:\[0.385 ; 1.030 ; 1.925 ; 2.825 ; 3.730 ; 4.8...

Let $y$ be the solution of the initial value problem $y^{\prime \prime}+0.8 y^{\prime}+0.16 y=0$, where $y(0)=3$ and $y^{\prime}(0)=4.5$. Then, $y(1)$ is equal to $\_\_\_...

Consider the differential equation given below. Using the Euler method with the step size $(h)$ of $0.5$, the value of $y$ at $x=1.0$ is equal to $\_\_\_\_\_$ (rounded of...

​​​​A partial differential equation\[\frac{\partial^{2} T}{\partial x^{2}}+\frac{\partial^{2} T}{\partial y^{2}}=0\]is defined for the two-dimensional field $T: T(x, y)$,...

The solution of the differential equation$\frac{d^3 y}{d x^3}-5.5 \frac{d^2 y}{d x^2}+9.5 \frac{d y}{d x}-5 y=0$is expressed as $y=C_1 e^{2.5 x}+C_2 e^{\alpha x}+C_3 e^{\...

The error in measuring the radius of a $5 \; \text{cm}$ circular rod was $0.2 \%.$ If the cross-sectional area of the rod was calculated using this measurement, then the ...

For the equation $$\frac{d^{3}y}{dx^{3}} + x \left ( \frac{dy}{dx} \right )^{\frac{3}{2}}+ x^{2}y=0$$ the correct description isan ordinary differential equation of order...

The Fourier cosine series of a function is given by : $$f\left ( x \right ) = \sum_{n = 0}^{\infty} f_{n} \cos nx$$ For $f\left ( x \right ) = \cos^{4} x$, the numerical ...

A particle moves along a curve whose parametric equations are: $x=t^3+2t$, $y=-3e^{-2t}$ and $z=2 \sin (5t)$, where $x$, $y$ and $z$ show variations of the distance cover...

It was observed that $150$ vehicles crossed a particular location of a highway in a duration of $30$ minutes. Assuming that vehicle arrival follows a negative exponential...