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Exercícios de Cálculo Integral e Diferencial I

Exercícios de Cálculo Integral e Diferencial I

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1. Calcule os seguintes integrais:<br />

3<br />

a)<br />

√<br />

x + 1 + 2<br />

<br />

0 8 + (x + 1) 3<br />

dx , b)<br />

2. Calcule os seguintes integrais:<br />

a)<br />

1<br />

0<br />

10 a Ficha <strong>de</strong> problemas<br />

<strong>Integral</strong> <strong>de</strong> Riemann e aplicações<br />

2<br />

√<br />

4 − x2dx ,<br />

1<br />

2 √<br />

b) 1 + 4x2dx 0<br />

, c)<br />

1<br />

1<br />

e2x e<br />

ln x<br />

dx , c)<br />

− 1 1 x(ln 2 dx ,<br />

x + 3 ln x + 2)<br />

π<br />

2<br />

0<br />

1<br />

dx ,<br />

sen x + cos x + 1<br />

3. Determine as áreas das regiões planas <strong>de</strong> R 2 limitadas pelas curvas<br />

i) y = ln x, y = 1 − x, y = 1.<br />

ii) y = x 2 − π 2 /4, y = cos x.<br />

4. Determine a área dos subconjuntos <strong>de</strong> R 2<br />

i) {(x, y) ∈ R 2 : 0 ≤ x ≤ π/2 ∧ 0 ≤ y ≤ x cos x}.<br />

ii) {(x, y) ∈ R 2 : −1 ≤ x ≤ 1 ∧ 0 ≤ y ≤ [(x + 3) √ x + 2] −1 }.<br />

22

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