Estimate `lim_(x->0)(cos2x-cosx)/(x^2)`
From the graphs it appears that the y-intercept is at -1.5.
`f(.1)~~-1.493759`
`f(.01)~~ -1.499938`
`f(.001)~~-1.499999`
`f(.0001)~~-1.5`
Estimate `lim_(x->0)(cos2x-cosx)/(x^2)`
From the graphs it appears that the y-intercept is at -1.5.
`f(.1)~~-1.493759`
`f(.01)~~ -1.499938`
`f(.001)~~-1.499999`
`f(.0001)~~-1.5`