Recent content by zhaojx84

Thank you very much. Regards.

Thanks very much. Could you tell me which software did you use to express this curve? Is there a formula for this curve. Thanks again for your help.

$$\int_{0}^{\frac{-a}{2}+\frac{\sqrt{392-{a}^{2}}}{2}} {y}^{2}\arcsin\left({\frac{a+y}{\sqrt{196-{y}^{2}}}}\right)\,dy$$

$$\int {z}^{2}\arcsin\left({\frac{a+\sqrt{392-{a}^{2}-2{z}^{2}}}{2 \sqrt{196-{z}^{2}}}}\right) dz$$ $$\int {z}^{2}\arcsin\left({\frac{a}{\sqrt{196-{z}^{2}}}}\right) dz$$

Could you help me later? I cannot figure it out. Thanks very much!

Thanks for your help. However, the substitution in the sqrt root is not correct.

Re: How to calculate this type of intergretion The integration in the figure is what I want to calculate. Thanks very much for your help.

Could anyone can tell me how to calculate this type of intergretion. Thanks very much $$\int\frac{{y}^{3}}{(196 - {y}^{2})\times \sqrt{196 - {y}^{2} - {a + y}^{2}}}$$