\displaystyle\int{e}^{{\tan}}^{\left({\left(-{1}\right)}{x}\right)}{\left({1}+{x}+{x}^{{2}}\right)}{d}{\left({{\cot}^{{-{1}}}{x}}\right)}{i}{s}{e}{q}{u}{a}\lt{o}\displaystyle-{e}^{{\tan}}^{\left({\left(-{1}\right)}{x}\right)}+{c} (b) \displaystyle{e}^{{\tan}}^{\left({\left(-{1}\right)}{x}\right)}+{c}\displaystyle-{x}{e}^{{\tan}}^{\left({\left(-{1}\right)}{x}\right)}+{c} (d) \displaystyle{x}{e}^{{\tan}}^{\left({\left(-{1}\right)}{x}\right)}+{c}

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