Integral of \( \displaystyle e^{2 x} \sin{\left(e^{2 x} \right)} \)
Problem 4.740 · medium
Find \( \displaystyle \int e^{2 x} \sin{\left(e^{2 x} \right)} \, dx \). (Omit the constant of integration.)
- \[ \int e^{2 x} \sin{\left(e^{2 x} \right)}\, dx \]integral algebra algebra rewriteStart with the integral of the given function. Multiply and divide by 2 to prepare for substitution. Distribute the constant. Recognize the derivative of the inner function.✓ Proved
- \[ = \frac{\int 2 e^{2 x} \sin{\left(e^{2 x} \right)}\, dx}{2} \]linearityPull the constant out of the integral.✓ Proved
- \[ = - \frac{\cos{\left(e^{2 x} \right)}}{2} \]antiderivativeIntegrate the remaining expression using the substitution rule.✓ Proved
Answer \( - \frac{\cos{\left(e^{2 x} \right)}}{2} + C \)
✓ 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 |
| 5 | ✓ Proved | sympy 1.14.0 | simplify(a - b) reduced to 0 |
| 6 | ✓ 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)
gpt-oss:20b: pass 2026-10-09qwen3.6:27b-mlx: pass 2026-10-09gpt-oss:20b: pass 2026-10-09qwen3.6:27b-mlx: pass 2026-10-09 — The solution correctly applies substitution via algebraic manipulation and linearity. Each step changes only one aspect of the expression and uses valid labels from the fixed vocabulary.
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 2026-10-09 with SymPy 1.14.0.