If 2y2 + 7 = 3y - xy, find dydx
−y4x+y−3
y4x+y−3
−y4x+x−3
y4x+x−3
Correct answer is D
2y2 + 7 = 3y - xy, find dydx
4y dydx + 0 = 3 dydx - x dydx + y
{4x+x-3} dydx = y
= y4x+x−3
A fair die is tossed 60 times and the results are recorded in the table
| Number of die | 1 | 2 | 3 | 4 | 5 | 6 |
| Frequency | 15 | 10 | 14 | 2 | 8 | 11 |
Find the probability of obtaining a prime number.
730
16
715
815
Correct answer is D
Prime number in the experiment are 2,3 and 5 with frequencies 10,14 and 8
P(obtaining a prime number) = 10+14+860
= 3260 or 815
calculate the normal reaction to the plane. [ Take g = 10m/s2 ]
129.9N
75N
60.0N
7.5N
Correct answer is B
Let the normal reaction be R
R = Wcosø = mgcosø
= 15 * 10cos 60°
= 150 * 0.5000
= 75N
(11−1.5−2)
(1−11.5−2)
(−211.51)
(−2−11.51)
Correct answer is A
Let A = (42−3−2);
|A| = -8 - (-6) = -8 + 6
|A| = -2
A−1 = 1−2 = (−22−34)
= (11−1.5−2)