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Question Number 48078 by cesar.marval.larez@gmail.com last updated on 19/Nov/18

Answered by tanmay.chaudhury50@gmail.com last updated on 19/Nov/18

$$21)\int e^{2-x}dx$$$$t=2-xdt=-dx$$$$\int e^t\times -dt$$$$=(-1)e^t+c$$$$=(-1)e^{2-x}+c$$$$24)\int x^2{e}^{x^3-1}dx$$$$t=x^3-1sodt=3x^{2}dx$$$$\int e^t\times \frac{dt}{3}$$$$=\frac{1}{3}{e}^t+c$$$$=\frac{1}{3}{e}^{x^3-1}+c$$$$20)\int e^{-0.02x}dx$$$$t=-0.02x$$$$dt=(-0.02)dx$$$$\int e^t\times \frac{dt}{(-0.02)}$$$$=\frac{1}{(-0.02)}{e}^t+c$$$$=\frac{1}{(-0.02)}{e}^{-0.02x}+c$$

Commented by cesar.marval.larez@gmail.com last updated on 19/Nov/18

$$Sir,thanku$$

Commented by cesar.marval.larez@gmail.com last updated on 19/Nov/18

$$Uranexpert$$

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