- Integration (x^2-1)/(x^2+1)xdx=dy/y?

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The magnetic field at the (x,y,z) position ( 3 mm , 0 mm, 0 mm) is 1.0×10−13ȷ^T. The field at (0 mm, 3 mm , 0 mm) is −1.0×10−13ı^T. speed? Find the sum of the indicated number of terms of the geometric sequence.
10, 4, 8/5, ...; n = 5? How to calculate kp of a backward reaction if kp of forward reaction is known (temperature and pressure remains constant)? What is the reaction between Sodium Chlorite (NaClO2) and Hydrogen Peroxide (H2O2)? a chemical equation would be appreciated? Need help to understand why this equation is different from the formulas given. Write each product as a sum or difference
1. cos(10x)sin(5x)?