Suppose two different functions have the same derivative on some interval {{MATH_133}}. What can you say about the relationship between the two functions? {{CMD_134}} Set {{MATH_135}}, so {{MATH_136}}. Now {{MATH_137}} on the interval {{MATH_138}}. This means that {{MATH_139}}, for all {{MATH_140}} in {{MATH_141}}, where {{MATH_142}} is some constant. Hence, for all {{MATH_143}} in {{MATH_144}} {{MATH_145}} {{CMD_146}} {{CMD_147}}