Class 12 · Mathematics (041)
Unit 7 · Class 12Mathematics (041)
Calculus

Integrals

Indefinite and definite integrals, standard forms, substitution, by parts, partial fractions.

Lessons
5 concepts
  1. 1
    Indefinite Integrals
    ∫f(x) dx=F(x)+C\int f(x)\, dx = F(x) + C where F′=fF' = f.
  2. 2
    Standard Integrals
    ∫xndx=xn+1n+1+C\int x^n dx = \dfrac{x^{n+1}}{n+1} + C (for n≠−1n \ne -1); ∫1xdx=ln⁡∣x∣+C\int \dfrac{1}{x} dx = \ln|x| + C.
  3. 3
    Substitution
    ∫f(g(x))g′(x)dx=∫f(u)du\int f(g(x)) g'(x) dx = \int f(u) du where u=g(x)u = g(x).
  4. 4
    Integration by Parts
    ∫u dv=uv−∫v du\int u\, dv = uv - \int v\, du.
  5. 5
    Definite Integrals
    ∫abf(x)dx=F(b)−F(a)\int_a^b f(x) dx = F(b) - F(a). Properties: ∫ab=−∫ba\int_a^b = -\int_b^a; ∫ab=∫ac+∫cb\int_a^b = \int_a^c + \int_c^b.
Skills to practise
Practice bank for this unit is in progress. You can still read the lessons above.
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