Determine the type of heat exchanger$($s$)$ used in each case and draw the temperature profile$($s$)$ for

each:

i$)$ Two temperature profiles with a negative and positive slope

ii$)$ Two temperature profiles with positive slopes

iii$)$ Two temperature profiles with negative slopes

iv$)$ Two temperature profiles with a zero and a positive $($negative$)$ slope

Please can you provide with diagrams $as$ soon $as$ possible