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Integration and applications of integration — Question 1

QCAA 2025, Paper 1 · 1 mark

Q1 · 2025 · Technology-freeSimple familiar1 mark

QUESTION 1

Use the substitution

u=x^2

to express

\displaystyle\int 2xe^{x^2}\,dx

in terms of

u

.

(A)

\displaystyle\int e^u\,du

(B)

\displaystyle\int \frac12 e^u\,du

(C)

\displaystyle\int ue^u\,du

(D)

\displaystyle\int 2\sqrt{u}e^u\,du

ABCD

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