AP EAMCET · Maths · Determinants
If \(\left[\begin{array}{rrr}1 & 2 & x \\ 4 & -1 & 7 \\ 2 & 4 & -6\end{array}\right]\) is a singular matrix, then \(x\) is equal to
- A \(0\)
- B \(1\)
- C \(-3\)
- D \(3\)
Answer & Solution
Correct Answer
(C) \(-3\)
Step-by-step Solution
Detailed explanation
Let \(A=\left[\begin{array}{ccc}1 & 2 & x \\ 4 & -1 & 7 \\ 2 & 4 & -6\end{array}\right]\) is a singular matrix Then, \(|A|=0\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Maths
- The solution of the differential equation \(\cos (x+y) d y=d x\) given that \(y(0)=0\) isAP EAMCET 2020 Easy
- If \(\int \sin ^5 x d x=\frac{-\cos ^5 x}{5}+a \cos ^3 x+b \cos x+c\), then \(a+b=\)AP EAMCET 2017 Medium
- If \(f(x)=\left(x^2-1\right)^7\), then \(f^{(14)}(x)\) is equal toAP EAMCET 2012 Medium
- \(\lim _{x \rightarrow \infty}[x-\log (\cosh x)]=\)AP EAMCET 2025 Hard
- If \(x^2+y^2+6 x+2 k y+25=0\) to touch \(Y\)-axis, then \(k=\)AP EAMCET 2020 Easy
- If \(\int \frac{\mathrm{dx}}{\sin ^3 \mathrm{x}+\cos ^3 \mathrm{x}}=\mathrm{A} \log \left|\frac{\sqrt{2}+\mathrm{t}}{\sqrt{2}-\mathrm{t}}\right|+\mathrm{B} \operatorname{Tan}^{-1}(\mathrm{t})+\mathrm{c}\), then \(\left(\frac{\mathrm{B}}{\mathrm{A}}, \mathrm{t}\right)=\)AP EAMCET 2025 Hard
More PYQs from AP EAMCET
- If \({ }^{12} C_{2 k-1}={ }^{12} C_{k+1}\), then find \(k\)AP EAMCET 2020 Easy
- If the product of the lengths of the perpendicular drawn from the ends of a diameter of the circle \(x^2+y^2=4\) on to the line \(x+y+1=0\) is maximum, then the two ends of that diameter areAP EAMCET 2025 Medium
- If \(\tan A\) and \(\tan B\) are the roots of the quadratic equation \(x^2-p x+q=0\), then \(\sin ^2(A+B)\) is equal toAP EAMCET 2011 Medium
- In which of the following amino acids - \(\mathrm{OH}\) group is present?
\begin{array}{cccc}
Lysine & Serine & Tyrosine & Valine \\
A & B & C & D
\end{array}AP EAMCET 2023 Easy - The time period of revolution of a satellite close to planet's surface is 80 minutes. The time period of another satellite which is at a height of 3 times the radius of the planet from surface isAP EAMCET 2024 Easy
- The following are some statements related to VA group hydrides,
I. Reducing property increases from \(\mathrm{NH}_3\) to \(\mathrm{BiH}_3\).
II. Tendency to donate lone pair decreases from \(\mathrm{NH}_3\) to \(\mathrm{BiH}_3\).
III. Thermal stability of hydrides decreases from \(\mathrm{NH}_3\) to \(\mathrm{BiH}_3\).
IV. Bond angle of hydrides decreases from \(\mathrm{NH}_3\) to \(\mathrm{BiH}_3\).
The correct statements areAP EAMCET 2007 Easy