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Some search you can use the ruffini rule and the rational root theorem http://en.wikipedia.org/wiki/Ruffini%27s_rule look the section Polynomial root-finding

You tried to sue any method to solve this equation http://en.wikipedia.org/wiki/Cubic_equations Two roots of this equation (x^3-7x-36) is imaginary

R1+{1/R3+[(1/R5+1/R6)+R4]}+R2 R1+ \{ \frac{1}{R3} + (( \frac{1}{R5}+ \frac{1}{R6} )+ R4) \} + R2

I believe that tou can join the R5/R6 in parallel more the R4 in series to form a "block" with the R4 in parallel with this block

yes, how to use +- in latex?

fundamental relationship of trigonometry sin^2 x + cos^2 x = 1 look http://en.wikipedia.org/wiki/List_of_trigonometric_identities

\sin x= \sqrt{1-cos^2x} :devil:

Search in a physics book over modern physics Maybe these links can help you http://en.wikipedia.org/wiki/Atomic_nucleus http://en.wikipedia.org/wiki/Radioactive_series

thanks for the link. The target for the primary X-rays ("scattering target") process is localized in the center of the chamber? Compton used the angle of recoiling electron to measure the angle of secondary ray, using this relation \cot\frac{1}{2}\delta=\tan\theta ? The shown image in the...

anyone?

What equipment Compton used to measure the wavelenght shift in your experiment ? Some links talk about the use of bragg spectrometer others about the use of ionization chambers. In this link have some illustrations of spectras resultants of Compton experiments...