It is 60 since it is clearly not 30 and not 90 either. 120 and 150 are irrelevant.
Answer:
cos3x
Step-by-step explanation:
y" - y' + 9y = 3 sin 3x


here
will be replaced by
where
is coefficient of x




y=cos3x
hence Particular solution is cos3x
Answer:
D. 4x-13=1
Step-by-step explanation:
Four times a number is 4x. 13 less means you subtract 13 from it.
Answer:
less than twenty five
v
25 - <u>(2n + 8)</u> < the sum of 2 times N plus 8.
Step-by-step explanation: