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Date May 2019 Marks available 5 Reference code 19M.1.SL.TZ1.S_5
Level Standard Level Paper Paper 1 Time zone Time zone 1
Command term Find Question number S_5 Adapted from N/A

Question

The derivative of a function f is given by f(x)=2e3x. The graph of f passes through (13,5).

Find f(x).

Markscheme

* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.

recognizing to integrate   (M1)

eg   f,  2e3xdx,  du=3

correct integral (do not penalize for missing +C)     (A2)

eg   23e3x+C

substituting (13,5) (in any order) into their integrated expression (must have +C)      M1

eg   23e3(1/3)+C=5

Note: Award M0 if they substitute into original or differentiated function.

f(x)=23e3x+5+23e1 (or any equivalent form, eg 23e3x+523e)               A1   N4

[5 marks]

Examiners report

[N/A]

Syllabus sections

Topic 5—Calculus » AHL 5.11—Indefinite integration, reverse chain, by substitution
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