Find the particular solution of `cos((dy)|(dx))=a`, given that `y=2` when `x=0`

Find the particular solution of `cos((dy)/(dx))=a`, given that `y=2` when `x=0`
Find the particular solution of `cos((dy)|(dx))=a`, given that `y=2` when `x=0`
Find the particular solution of `cos((dy)|(dx))=a`, given that `y=2` when `x=0`
Find the particular solution of `cos((dy)|(dx))=a`, given that `y=2` when `x=0`

`x=0`