If `("lim")_(xvec0)(cos4x+acos2x+b)/(x^4)` is finite, find `aa n db` using expansion formula.

If ("lim")_(x -> 0)(cos4x+acos2x+b)/(x^4) is finite, find aa n db using expansion formula.

If lim_(x to 0) (cos4x+acos2x+b)/(x^(4)) is finite, find a and b using expansion formula. Also, find the limit.

If lim_(x rarr0)(cos4x+a cos2x+b)/(x^(4)) is finite,find a and b using expansion formula.

Evaluate: ("lim")_(xvec0)(1-cos2x)/(x^2)

Evaluate: ("lim")_(xvec0)(e^x^2-cosx)/(x^2)

Evaluate: ("lim")_(xvec0)(cot2x-cos e c2x)/x

Evaluate: ("lim")_(xvec0)(cot2x-cos e c2x)/x

("lim")_(xvec0)(5sinx-7sin2x+3sin3x)/(x^2sinx)

Evaluate: ("lim")_(xvec0)(tanx-sinx)/(x^3)

Evaluate: ("lim")_(xvec0)(x2^x-x)/(1-cosx)