In: Advanced Math
a)
Select all solutions of (d^2/dx^2)y(x)+64y(x)=0.
y(x)=3cos(8x) |
||
y(x)=3cos(4x) |
||
y(x)=C1sin(8x)+C2cos(8x) |
||
y(x)=−4sin(8x) |
||
y(x)=C2cos(8x) |
b)
Select all solutions of (d^2/dx^2)y(x)+36y(x)=0.
y(x)=C2cos(3x) |
||
y(x)=C1sin(3x) |
||
y(x)=3cos(3x) |
||
y(x)=3cos(6x) |
||
y(x)=3sin(3x)+8cos(3x) |