3. Consider a substance M in a tube. At x=0, there is a large source of M at a coesentrution of U.1mol. (1) If the cancemtration diatrihution is deserihed hy dxdepe, where p is a canotant 25/a. What is the maximam timesiep tha en be used w sulve this squation with Fuler's mathod? (2) Solve the above equistion waing Eukr's method with a shep sime of 0.1m. Show your caleulations for the first four stepe and numarim the diats in a talden (3) If M can diffose, the equacian governing the concenomion is Ddx2d2c=kc, where D is the difflusoe censiant, 2104m2/s, and k5107/4. Convert the differencial equalion to two find-0inker equarions. (4) Solve the equations in (3) with Eake's method with a sep sise of 0.1m. Shor your ealeulatsons for