Derivative of \( \displaystyle \left(3 x - 3\right) e^{6 x - 6} \)
Problem 2.506 · medium
Differentiate \( \displaystyle f(x) = \left(3 x - 3\right) e^{6 x - 6} \).
- \[ \frac{d}{d x} \left(3 x - 3\right) e^{6 x - 6} \]Start with the derivative of the function.✓ Proved
- \[ = \left(3 x - 3\right) \frac{d}{d x} e^{6 x - 6} + e^{6 x - 6} \frac{d}{d x} \left(3 x - 3\right) \]productApply the product rule.✓ Proved
- \[ = \left(3 x - 3\right) \frac{d}{d x} e^{6 x - 6} + 3 e^{6 x - 6} \]derivativeDifferentiate the first part of the product.✓ Proved
- \[ = \left(3 x - 3\right) e^{6 x - 6} \frac{d}{d x} \left(6 x - 6\right) + 3 e^{6 x - 6} \]chainApply the chain rule to the exponential term.✓ Proved
- \[ = 6 \left(3 x - 3\right) e^{6 x - 6} + 3 e^{6 x - 6} \]derivativeDifferentiate the inner function 6*x - 6.✓ Proved
- \[ = \left(18 x - 18\right) e^{6 x - 6} + 3 e^{6 x - 6} \]algebraDistribute the 6 into the parentheses.✓ Proved
- \[ = \left(18 x - 15\right) e^{6 x - 6} \]algebra simplifyFactor out the common exponential term. Combine the constant terms.✓ Proved
Answer \( \left(18 x - 15\right) e^{6 x - 6} \)
✓ 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 |
| 7 | ✓ Proved | sympy 1.14.0 | simplify(a - b) reduced to 0 |
| 8 | ✓ 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 f directly and got the stated answer |
Reviewers
gpt-oss:20b: passqwen3.6:27b-mlx: pass
Every verdict on record (6)
qwen3.6:27b-mlx: pass 2026-09-21gpt-oss:20b: pass 2026-09-21qwen3.6:27b-mlx: pass 2026-09-20gpt-oss:20b: pass 2026-09-20qwen3.6:27b-mlx: pass 2026-09-20gpt-oss:20b: pass 2026-09-20
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 2026-09-26 with SymPy 1.14.0.