Answer:
A
Step-by-step explanation:
20 x 2 = 40
30 x 2 = 60
3 125
---= ------
2 ?
2×125
--------
3
Ans.£83.33
Answer:
sorry I didn't knew it was calculus.
Answer:
y =
+ 
Step-by-step explanation:
y''- 9 y' + 18 y = t²
solution of ordinary differential equation
using characteristics equation
m² - 9 m + 18 = 0
m² - 3 m - 6 m+ 18 = 0
(m-3)(m-6) = 0
m = 3,6
C.F. = 
now calculating P.I.


hence the complete solution
y = C.F. + P.I.
y =
+ 