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Benzene has the molecular formula C₆H₆, with the 6 carbon atoms forming a planar hexagonal ring of C-C sigma bonds. The six hydrogen atoms, one attached to each carbon atom via a C-H...

the derivative of sinx is cosx, then we know that we can apply the product rule to find derivative of xsinx, such that if we let u=x and v=sinx and apply the formula d/dx(xsinx)=udv/dx+vdu/dx. to...

The law of supply and demand is one of the fundamental concepts of basic economics. It is the foundation on which several economic theories have been built. The law of demand states the higher the price o...

Generally, increasing the temperature increases membrane permeability. At temperatures below 0 ^oC the phospholipids in the membrane don't have much energy and so they can't move much, which mea...

3x + 5y = 1   (eq 1)
2x - 3y = 7    (eq 2)

Step 1 -  2* (eq 1) 

6x + 10y = 2  (eq 3)

Step 2 - 3* (eq 2)

6x - 9y = 21  (eq 4)