As a user, I would like to be able to do basic calculus (derivatives and definite integrals) and summations
Acceptance Criteria: As a user, the calculator should display correct results when taking derivatives and definite integrals, as well as be able sum expressions correctly.
As a user, I would like to be able to do basic calculus (derivatives and definite integrals) and summations
Acceptance Criteria: As a user, the calculator should display correct results when taking derivatives and definite integrals, as well as be able sum expressions correctly.