Integral of \( \displaystyle e^{6 x + 3} \)
Problem 4.354 · easy
Find \( \displaystyle \int e^{6 x + 3} \, dx \). (Omit the constant of integration.)
- \[ \int e^{6 x + 3}\, dx \]integralStart with the integral of the given function.✓ Proved
- \[ = \int e^{3} e^{6 x}\, dx \]algebraUse the property of exponents to split the term.✓ Proved
- \[ = e^{3} \int e^{6 x}\, dx \]linearityFactor out the constant term.✓ Proved
- \[ = \frac{e^{3} e^{6 x}}{6} \]antiderivativeApply the rule for integrating exponential functions.✓ Proved
Answer \( \frac{e^{6 x + 3}}{6} + C \)
✓ Nihil obstat Every line of this solution was proved by the computer algebra system SymPy. The answer was also checked a second way, without looking at the solution. Reviewers found nothing wrong with the explanation.
The full receipt
| Line | Status | Checked by | Detail |
|---|---|---|---|
| 1 | ✓ Proved | sympy 1.14.0 | line 1 is the problem as stated |
| 2 | ✓ Proved | sympy 1.14.0 | simplify(a - b) reduced to 0 |
| 3 | ✓ Proved | sympy 1.14.0 | simplify(a - b) reduced to 0 |
| 4 | ✓ Proved | sympy 1.14.0 | simplify(a - b) reduced to 0 |
| answer | ✓ Proved | sympy 1.14.0 | final line against the stated answer: simplify(a - b) reduced to 0 |
| answer, a second way | ✓ Proved | sympy 1.14.0 | SymPy differentiated the stated antiderivative back to the integrand |
Reviewers
gpt-oss:20b: passqwen3.6:27b-mlx: pass
Every verdict on record (4)
qwen3.6:27b-mlx: pass 2026-10-05gpt-oss:20b: pass 2026-10-05qwen3.6:27b-mlx: pass 2026-10-05 — The solution correctly applies algebraic simplification, linearity, and the antiderivative rule in distinct steps. Each step changes only one aspect of the expression and uses valid labels from the vocabulary.gpt-oss:20b: pass 2026-10-05
Proved: SymPy reduced the difference between the two sides to zero. Checked independently: a separate
method, named above, confirmed it. Checked numerically: the two sides agree at every sampled point, which is evidence,
not proof. Reviewed: a model or a person read it; that is all a sentence can have. Solution by
gemma4:26b, checked 2026-10-05 with SymPy 1.14.0.