L
l4s.smiledonghae


Tìm các nguyên hàm sau:
1. $$\int {\left( {2\cos x + 1} \right)} .{e^{2\cos x + 1}}dx$$
2. $$\int {\dfrac{{\ln x}}{{{x^4}}}dx} $$
1. $$\int {\left( {2\cos x + 1} \right)} .{e^{2\cos x + 1}}dx$$
2. $$\int {\dfrac{{\ln x}}{{{x^4}}}dx} $$
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