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9709 P3 · Notes & worked examples

Integrating partial fractions · Short practice

Check a final answer, then explain the reasoning on paper. Guest progress stays in this browser; an account saves future checks without overwriting your first result.

Recall

Integration using partial fractions — objective 1

Maths4U Original · Short practice

For \(\displaystyle x\ge 0\), consider \(\displaystyle f(x)=\frac{\left(2 x + 11\right) \left(3 x + 8\right)}{\left(x + 1\right) \left(x + 4\right) \left(x + 6\right)}\). Use the decomposition \(\displaystyle \frac{A}{x+ 1}+ \frac{B}{x+ 4}+ \frac{C}{x+ 6}\).

Find A in the stated decomposition.

Enter one number or fraction. Keep exact values during your working; use at least six decimal places for an approximate final answer. A calculator may be used.

Fresh review variant

Integration using partial fractions — objective 1

Maths4U Original · Short practice

For \(\displaystyle x\ge 0\), consider \(\displaystyle f(x)=\frac{7 x^{2} + 63 x + 134}{\left(x + 2\right) \left(x + 5\right)^{2}}\). Use the decomposition \(\displaystyle \frac{A}{x+ 2}+ \frac{B}{x+ 5}+ \frac{C}{(x+ 5)^{2}}\).

Find A in the stated decomposition.

Enter one number or fraction. Keep exact values during your working; use at least six decimal places for an approximate final answer. A calculator may be used.

Method

Integration using partial fractions — objective 2

Maths4U Original · Short practice

For \(\displaystyle x\ge 0\), consider \(\displaystyle f(x)=\frac{7 x^{2} + 63 x + 134}{\left(x + 2\right) \left(x + 5\right)^{2}}\). Use the decomposition \(\displaystyle \frac{A}{x+ 2}+ \frac{B}{x+ 5}+ \frac{C}{(x+ 5)^{2}}\).

Find B in that decomposition.

Enter one number or fraction. Keep exact values during your working; use at least six decimal places for an approximate final answer. A calculator may be used.

Fresh review variant

Integration using partial fractions — objective 2

Maths4U Original · Short practice

For \(\displaystyle x\ge 0\), consider \(\displaystyle f(x)=\frac{3 \left(3 x^{2} + 5 x + 63\right)}{\left(x + 3\right) \left(x^{2} + 36\right)}\). Use the decomposition \(\displaystyle \frac{A}{x+ 3}+ \frac{Bx+ C}{x^{2}+ 36}\).

Find B in that decomposition.

Enter one number or fraction. Keep exact values during your working; use at least six decimal places for an approximate final answer. A calculator may be used.

Apply

Integration using partial fractions — objective 3

Maths4U Original · Short practice

For \(\displaystyle x\ge 0\), consider \(\displaystyle f(x)=\frac{3 \left(3 x^{2} + 5 x + 63\right)}{\left(x + 3\right) \left(x^{2} + 36\right)}\). Use the decomposition \(\displaystyle \frac{A}{x+ 3}+ \frac{Bx+ C}{x^{2}+ 36}\).

Find C in that decomposition.

Enter one number or fraction. Keep exact values during your working; use at least six decimal places for an approximate final answer. A calculator may be used.

Fresh review variant

Integration using partial fractions — objective 3

Maths4U Original · Short practice

For \(\displaystyle x\ge 0\), consider \(\displaystyle f(x)=\frac{2 \left(4 x^{2} + 30 x + 41\right)}{\left(x + 1\right) \left(x + 4\right) \left(x + 6\right)}\). Use the decomposition \(\displaystyle \frac{A}{x+ 1}+ \frac{B}{x+ 4}+ \frac{C}{x+ 6}\).

Find C in that decomposition.

Enter one number or fraction. Keep exact values during your working; use at least six decimal places for an approximate final answer. A calculator may be used.

Check understanding

Integration using partial fractions — objective 4

Maths4U Original · Short practice

For \(\displaystyle x\ge 0\), consider \(\displaystyle f(x)=\frac{2 \left(4 x^{2} + 30 x + 41\right)}{\left(x + 1\right) \left(x + 4\right) \left(x + 6\right)}\). Use the decomposition \(\displaystyle \frac{A}{x+ 1}+ \frac{B}{x+ 4}+ \frac{C}{x+ 6}\).

Find the definite integral from 0 to 1.

Enter one number or fraction. Keep exact values during your working; use at least six decimal places for an approximate final answer. A calculator may be used.

Fresh review variant

Integration using partial fractions — objective 4

Maths4U Original · Short practice

For \(\displaystyle x\ge 0\), consider \(\displaystyle f(x)=\frac{4 x^{2} + 39 x + 89}{\left(x + 2\right) \left(x + 5\right)^{2}}\). Use the decomposition \(\displaystyle \frac{A}{x+ 2}+ \frac{B}{x+ 5}+ \frac{C}{(x+ 5)^{2}}\).

Find the definite integral from 0 to 1.

Enter one number or fraction. Keep exact values during your working; use at least six decimal places for an approximate final answer. A calculator may be used.

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