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RRB Paramedical Preparation Tips 2026: The RRB Paramedical Exam 2026 offers a secure and respected career in Indian Railways healthcare services. Candidates must follow a clear preparation strategy, understand the exam pattern and syllabus, and focus on professional knowledge. Check this article for preparation tips for RRB Paramedical Exam 2026.RRB Paramedical Preparation Tips 2026: The RRB Paramedical Exam 2026 offers a secure and respected career in Indian Railways healthcare services. Candidates must follow a clear preparation strategy, understand the exam pattern and syllabus, and focus on professional knowledge. Check this article for preparation tips for RRB Paramedical Exam 2026.RRB Paramedical Preparation Tips 2026: The RRB Paramedical Exam 2026 offers a secure and respected career in Indian Railways healthcare services. Candidates must follow a clear preparation strategy, understand the exam pattern and syllabus, and focus on professional knowledge. Check this article for preparation tips for RRB Paramedical Exam 2026.RRB Paramedical Preparation Tips 2026: The RRB Paramedical Exam 2026 offers a secure and respected career in Indian Railways healthcare services. Candidates must follow a clear preparation strategy, understand the exam pattern and syllabus, and focus on professional knowledge. Check this article for preparation tips for RRB Paramedical Exam 2026.RRB Paramedical Preparation Tips 2026: The RRB Paramedical Exam 2026 offers a secure and respected career in Indian Railways healthcare services. Candidates must follow a clear preparation strategy, understand the exam pattern and syllabus, and focus on professional knowledge. Check this article for preparation tips for RRB Paramedical Exam 2026.RRB Paramedical Preparation Tips 2026: The RRB Paramedical Exam 2026 offers a secure and respected career in Indian Railways healthcare services. Candidates must follow a clear preparation strategy, understand the exam pattern and syllabus, and focus on professional knowledge. Check this article for preparation tips for RRB Paramedical Exam 2026.
Eq1

RRB Paramedical Preparation Tips 2026: The RRB Paramedical Exam 2026 offers a secure and respected career in Indian Railways healthcare services. Candidates must follow a clear preparation strategy, understand the exam pattern and syllabus, and focus on professional knowledge. Check this article for preparation tips for RRB Paramedical Exam 2026.

eq2

$$
\begin{align*}
\text{i.} \quad & c = 3 \times 10^8 \text{ m/s} \\
\text{ii.} \quad & m_e = 9.1 \times 10^{-31} \text{ kg} \\
\text{iii.} \quad & m_p = 1.7 \times 10^{-27} \text{ kg} \\
\text{iv.} \quad & e = 1.6 \times 10^{-19} \text{ C} \\
\text{v.} \quad & \mu_0 = 4\pi \times 10^{-7} \text{ T m A}^{-1} \\
\text{vi.} \quad & h = 6.63 \times 10^{-34} \text{ J s} \\
\text{vii.} \quad & \varepsilon_0 = 8.854 \times 10^{-12} \text{ C}^2 \text{ N}^{-1} \text{ m}^{-2} \\
\text{viii.} \quad & \text{Avogadro's number} = 6.023 \times 10^{23} \text{ per gram mole}
\end{align*}
$$

eq3

1. If \( A = [a_{ij}] \) is an identity matrix, then which of the following is true?
A. \( a_{ij} = \{ 0, \text{ if } i = j; \quad 1, \text{ if } i \neq j \)
B. \( a_{ij} = 1, \forall i, j \)
C. \( a_{ij} = 0, \forall i, j \)
D. \( a_{ij} = \{ 0, \text{ if } i \neq j; \quad 1, \text{ if } i = j \)

2. For any square matrix \( A \), \( \left( A - A^T \right)^T \) is always :
A. An identity matrix
B. A null matrix
C. A skew symmetric matrix
D. symmetric matrix

3. Let, \( A \) be the area of a triangle having vertices \( (x_1, y_1), (x_2, y_2) \) and \( (x_3, y_3) \). Which of the following is correct?
A. \( \begin{vmatrix} x_1 & y_1 & 1 \\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1 \end{vmatrix} = \pm A \)
B. \( \begin{vmatrix} x_1 & y_1 & 1 \\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1 \end{vmatrix} = \pm 2A \)
C. \( \begin{vmatrix} x_1 & y_1 & 1 \\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1 \end{vmatrix} = \pm \frac{A}{2} \)
D. \( \begin{vmatrix} x_1 & y_1 & 1 \\ x_2 & y_2 & 1 \\ x_3 & y_3 & 1 \end{vmatrix}^2 = A^2 \)

4. If \( y = \frac{\cos x - \sin x}{\cos x + \sin x} \), then \( \frac{dy}{dx} \) is :
A. \( -\sec^2 \left( \frac{\pi}{4} - x \right) \)
B. \( \sec^2 \left( \frac{\pi}{4} - x \right) \)
C. \( \ln \left| \sec \left( \frac{\pi}{4} - x \right) \right| \)
D. \( -\ln \left| \sec \left( \frac{\pi}{4} - x \right) \right| \)

RRB Paramedical Preparation Tips 2026: The RRB Paramedical Exam 2026 offers a secure and respected career in Indian Railways healthcare services. Candidates must follow a clear preparation strategy, understand the exam pattern and syllabus, and focus on professional knowledge. Check this article for preparation tips for RRB Paramedical Exam 2026.

The values of \( x \) that satisfy the equation are called solutions of the equation, and roots or zeros of the quadratic function on its left-hand side. A quadratic equation has at most two solutions. If there is only one solution, one says that it is a double root. If all the coefficients are real numbers, there are either two real solutions, or a real double root, or two complex solutions that are complex conjugates of each other. A quadratic equation always has two roots, if complex roots are included and a double root is counted for two. A quadratic equation can be factored into an equivalent equation[3]

$$ ax^2 + bx + c = a(x - r)(x - s) = 0 $$

where \( r \) and \( s \) are the solutions for \( x \).

The quadratic formula

$$ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} $$

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