Short answer
What should you know first?
Integral foundations on the GRE Mathematics Subject Test click when you connect area, accumulation, and antiderivatives instead of memorizing isolated formulas. This page focuses on the FTC layer that turns derivatives into a larger calculus story.
What to study here
Focus on the moves that actually change later work.
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Interpret integrals as accumulation and signed area.
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Compute basic indefinite and definite integrals.
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Use the Fundamental Theorem of Calculus in both directions.
Why it matters
Why this topic changes the rest of your prep.
This is the second half of the single-variable calculus core and one of the most important structural ideas in the whole subject.
Core notation
$$\int_a^b f(x)\,dx = F(b)-F(a)$$
Must know
Facts and heuristics that should start feeling automatic.
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Indefinite integrals need a constant of integration.
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Definite integrals measure signed area, not just geometric area.
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FTC Part I and Part II move in opposite directions between rate and accumulation.
Useful cue
Ask whether the question is about area, accumulation, or anti-differentiation.
Worked example
One representative example.
Evaluate $$\int_0^2 (3x^2+1)\,dx$$.
Long route
An antiderivative is $$x^3+x$$. Evaluate it at the bounds to get $$(8+2)-0=10$$.
Fast route
Take the antiderivative once and use endpoint evaluation immediately.
Common traps
What usually breaks first.
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Adding $$+C$$ to a definite integral.
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Confusing signed area with total geometric area.
Quick questions
Short answers that searchers usually need first.
What should I study before integrals review for the GRE Mathematics Subject Test?
Before integrals review, steady Limits and continuity, Derivative mechanics so this topic does not turn into algebra or setup cleanup.
Why does integrals review matter on the GRE Mathematics Subject Test?
This is the second half of the single-variable calculus core and one of the most important structural ideas in the whole subject.
What does integrals review unlock after it gets stronger?
Integrals review unlocks Substitution and core applications of integrals inside the same dependency-first study graph.