Your contribution cannot be approved because it does not follow the Utopian Rules.

• Contributions in tutorials category are expected to teach technical aspects of an open source project. Analysis methods are subjects of electronics, they are not about Qucs. Utopian rewards contributions to open source projects, not on science and engineering. Electronics courses using Qucs to visualize the circuits cannot be approved.
• Even if it's a well-explained tutorial, you should teach about open source projects to be rewarded, instead of general electronics.
• For further clarification, using a circuit design software to visualize your general electronics tutorials, is similar like using IDEs for general programming language tutorials. And no, they can't be considered as tutorials for IDEs.

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