Carboxylic acids and derivatives: compare question

Methanoic acid, $\ce{HCOOH}$, and ethanedioic acid, $\ce{HOOCCOOH}$, are both carboxylic acids that can be oxidised further.

Compare the oxidation of methanoic acid with Fehling's reagent with the oxidation of ethanedioic acid with warm acidified $\ce{KMnO4}$. In your answer include:

• the conditions and reagents for each reaction
• the organic product (if any) and the inorganic products
• the observation for each reaction
• the oxidation state change of carbon in each reaction.