If inverse of the matrix \(\begin{bmatrix}2&-0.5\\-1&x\end{bmatrix}\) is \(\begin{bmatrix}1&1\\2&4\end{bmatrix}\), then the value of x is

QA 2019 MCQ

If \(\sin\theta+\cos\theta=m\), then \(\sin^6\theta+\cos^6\theta\) equals

Practise this question →

QA 2019 MCQ

The function \(f(x)=\frac{x^3+5x^2-8x}{3}\) is

Practise this question →

QA 2019 MCQ

Given that \(\cos x+\cos y=1\), the range of \(\sin x-\sin y\) is

Practise this question →

QA 2019 MCQ

For a > b > c > 0, the minimum value of the function \(f(x)=|x-a|+|x-b|+|x-c|\) is

Practise this question →

QA 2019 MCQ

Two points on a ground are 1 m apart. If a cow moves in the field in such a way that it's distance from the two points is always in ratio 3: 2 then

Practise this question →

QA 2019 MCQ

Let \(\alpha,\beta\) be the roots of \(x^2-x+p=0\) and \(\gamma,\delta\) be the roots of \(x^2-4x+q=0\) where p and q are integers. If \(\alpha,\beta,\gamma,\delta\) are in geometric progression then p + q is

Practise this question →

QA 2019 MCQ

The area enclosed by the curve \(2|x|+3|y|=6\) is

Practise this question →

QA 2019 MCQ

If \((1+x-2x^2)^6=A_0+\sum_{r=1}^{12}A_rx^r\), then value of \(A_2+A_4+A_6+\cdots+A_{12}\) is

Practise this question →