What is the value of a + b + c + d ? - Vidyadip

MCQ

What is the value of a + b + c + d ?

A
62
✓
63
C
65
D
68

✓

Answer

Correct option: B.

63

$\text{ax}^3+\text{bx}^2+\text{cx}+\text{d}=\begin{bmatrix}\text{x}+1&\text{amp;}2\text{x}&\text{amp; 3}\text{x}\\2\text{x}+3&\text{amp;}\text{x+1}&\text{amp;}\text{x}\\2-\text{x}&\text{amp;}3\text{x}+4&\text{amp;}5\text{x}-1\end{bmatrix}$ if

$\text{x}=1\text{a}+\text{b}+\text{c}+\text{d}=\begin{bmatrix}2&\text{amp;}2&\text{amp;3}\\5&\text{amp;}2&\text{amp;1}\\1&\text{amp;}7&\text{amp;4} \end{bmatrix}$

$\text{a}+\text{b}+\text{c}+\text{d}=2-38+99=101-38=63$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from DETERMINANTS→DETERMINANTS — all question types→Maths STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

The angle between the straight lines $\frac{\text{x}+1}{2}=\frac{\text{y}-2}{5}=\frac{\text{z}+3}{4}$ and $\frac{\text{x}-1}{1}=\frac{\text{y}+2}{2}=\frac{\text{z}-3}{-3}$ is:

The distance in seconds, described by a particle in $ t $ seconds is given by $s = a{e^t} + {b \over {{e^t}}}$. Then acceleration of the particle at time t is

The function $\text{f(x)}=\frac{4-\text{x}^2}{4\text{x}-\text{x}^3}$

$\int_{\,0}^{\,1000} {{e^{x - [x]}}dx} $ is

Divide $20$ into two parts such that the product of one part and the cube of the other is maximum. The two parts are

The locus of $xy + yz = 0$ is:

If for a continuous function $f(x),$ $\int\limits_{ - \pi }^t {(f(x) + x\,\,dx)} = {\pi ^2} - {t^2},$ for all $t\, \ge - \pi ,$ then $f\left( { - \frac{\pi }{3}} \right)$ is equal to

The smallest integer function $f(x) = [x]$ is:

For $x > 0,$ if $f(x)=\int_{1}^{x} \frac{\log _{e} t}{(1+t)} d t,$ then $f(e)+f\left(\frac{1}{e}\right)$ is equal to ...... .

Let $f(x)=\frac{\sin x+\cos x-\sqrt{2}}{\sin x-\cos x}, x \in[0, \pi]-\left\{\frac{\pi}{4}\right\}$ Then $f\left(\frac{7 \pi}{12}\right) f "\left(\frac{7 \pi}{12}\right)$ is equal to