Assume that (lim)(thetavec1)f(theta) exi...

Assume that `(lim)_(thetavec1)f(theta)` exists and `(theta^2+theta-2)/(theta+3)lt=(f(theta))/(theta^2)lt=(theta^2+2theta-1)/(theta+3)` holds for certain interval containing the point `theta=-1` then `(lim)_(thetavec-1)f(theta)` is equal to `f(-1)` b. is equal to 1 c. is non-existent d. is equal to -1

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