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integrate \sqrt{1+(-1.97+0.6156x+0.0438x^2)^2} x=1.2 to 8.7

can you show me the steps

difficulty advanced
Guest Mar 3, 2015
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integrate \sqrt{1+(-1.97+0.6156x+0.0438x^2)^2} x=1.2 to 8.7

 

$$\\\int_{1.2}^{8.2}\; \sqrt{1+(-1.97+0.6156x+0.0438x^2)^2} \;\;dx\\\\
\int_{1.2}^{8.2}\; [1+(-1.97+0.6156x+0.0438x^2)^2]^{0.5} \;\;dx\\\\$$

 

Beats me.    

Melody  Mar 3, 2015

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