1
GATE CSE 2015 Set 1
MCQ (Single Correct Answer)
+2
-0.6
Consider the following $$2 \times 2$$ matrix $$A$$ where two elements are unknown and are marked by $$a$$ and $$b.$$ The eigenvalues of this matrix ar $$-1$$ and $$7.$$ What are the values of $$a$$ and $$b$$?
$$A = \left( {\matrix{ 1 & 4 \cr b & a \cr } } \right)$$
A
$$a=6, b=4$$
B
$$a=4, b=6$$
C
$$a=3, b=5$$
D
$$a=5,b=3$$
2
GATE CSE 2015 Set 1
Numerical
+2
-0
$$\sum\limits_{x = 1}^{99} {{1 \over {x\left( {x + 1} \right)}}} $$ = _____________.
Your input ____
3
GATE CSE 2015 Set 1
MCQ (Single Correct Answer)
+2
-0.6
Let $${a_n}$$ represent the number of bit strings of length n containing two consecutive 1s. What is the recurrence relation for $${a_n}$$?
A
$$a_{n - 2} + a_{n - 1} + 2^{n - 2}$$
B
$$a_{n - 2} + 2a_{n - 1} + 2^{n - 2}$$
C
$$2a_{n - 2} + a_{n - 1} + 2^{n - 2}$$
D
$$2a_{n - 2} + 2a_{n - 1} + 2^{n - 2}$$
4
GATE CSE 2014 Set 2
Numerical
+2
-0
The product of the non-zero eigenvalues of
the matrix $$\left[ {\matrix{ 1 & 0 & 0 & 0 & 1 \cr 0 & 1 & 1 & 1 & 0 \cr 0 & 1 & 1 & 1 & 0 \cr 0 & 1 & 1 & 1 & 0 \cr 1 & 0 & 0 & 0 & 1 \cr } } \right]$$ is ____ .
Your input ____
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