The differential equation, representing the curve y = e^(a cos x + b sin x) where a and b are arbitrary constants, is
d²y/dx² + 2y = 0
d²y/dx² + 2 dy/dx + 2y = 0
d²y/dx² - 2y = 0
d²y/dx² + y = 0
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy