Step-by-step explanation:
You have to do first and second derivatives :
y = a sin 3x + b cos 3x
dy/dx = 3a cos 3x - 3b sin 3x
d²y/dx² = - 9a sin 3x - 9b cos 3x
Next, you have to compare it :
let d²y/dx² = ky,
-9a sin 3x - 9b cos 3x = k(a sin 3x + b cos 3x)
-9(a sin 3x + b cos 3x) = k(a sin 3x + b cos 3x)
Therefore, k is equals to 9.
Answer:
Step-by-step explanation:
o,o is in the origin
Answer:
Sometimes
Step-by-step explanation:
Quadrilaterals are shapes with four sides.
This means some quadrilaterals will have 4 equal sides, others will have <em>no </em>equal sides!
There is no rule determining side length equivalence in quadrilaterals. But those may be sub-classified as other shapes.
