lim_(x rarr y)(cos^(2)x-cos^(2)y)/(x^(2)-y^(2))=

the value of lim_(x rarr y)(sin^(2)x-sin^(2)y)/(x^(2)-y^(2)) equals

Prove : underset(xrarry)"lim"(cos^(2)x-cos^(2)y)/(x^(2)-y^(2))=-(sin2y)/(2y)

Evaluate : lim_(xrarry)(cos^2x-cos^2y)/(x^2-y^2)

Evaluate: underset(x rarr y)lim (cos^(2)x - cos^(2)y)/(x^(2) - y^(2))

If f(x)=lim_(y rarr x)(sin^(2)y-sin^(2)x)/(y^(2)-x^(2)), then int4xf(x)dx equals (i)cos2x+C(ii)2cos2x+C(iii)-cos2x+C(iv)-2cos2x+C

lim_(x rarr-1)(cos2-cos2x)/(x^(2)-|x|)=

lim_(x rarr0)x^(2)cos(2/x)

lim_(x rarr0)(1-cos x sqrt(cos2x))/(x^(2))

Lim_(x rarr -1) (cos 2 - cos 2x)/(x^2-|x|)