Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
problems are investigated
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "problems are investigated" is correct and usable in written English.
It can be used in contexts where you are discussing the process of examining or analyzing issues or challenges. Example: "In this study, various problems are investigated to understand their underlying causes and potential solutions."
✓ Grammatically correct
Science
News & Media
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
57 human-written examples
Only Qatar Airways has a regular scheduled service - one flight a day from Heathrow to Doha - but that service has been temporarily been replaced with another aircraft while the 787's problems are investigated.
News & Media
Mental health problems are investigated under the same procedures as misconduct and poor performance, and any subsequent fitness to practice processes are required to be declared on application forms for jobs.
News & Media
Two different filter design problems are investigated.
Science
In this context, two problems are investigated.
One-dimensional problems are investigated in detail.
Specifically here two problems are investigated in the following way:.
Science
The research status and existing problems are investigated.
In the second part, endogeneity problems are investigated, together with the corresponding solutions.
Human-verified similar examples from authoritative sources
Similar Expressions
3 human-written examples
Such problems were investigated in [1 5].
Science
In [7, 10], some collocated boundary stabilization problems were investigated.
Science
The optical analysis and software problems were investigated and solved.
Science
Expert writing Tips
Best practice
Use the phrase "problems are investigated" when you want to emphasize a systematic and formal approach to understanding and addressing issues. It's particularly suitable for academic, scientific, or official contexts.
Common error
Avoid using "problems are investigated" in casual or informal settings, where simpler alternatives like "problems are looked into" or "issues are checked" might be more appropriate.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "problems are investigated" functions as a passive construction, indicating that problems are the subject of an action. As Ludwig AI confirms, this phrase is grammatically correct. Examples from Ludwig illustrate its use in academic and scientific contexts.
Frequent in
Science
88%
News & Media
9%
Formal & Business
3%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "problems are investigated" is a grammatically sound and widely used passive construction, as validated by Ludwig AI. Its primary function is to describe the formal and systematic examination of issues, particularly in scientific, academic, and professional contexts. While highly appropriate for these settings, it should be used sparingly in informal communication. Consider alternatives like "issues are examined" or "challenges are analyzed" to tailor the language to different contexts. The phrase appears most frequently in scientific sources, and its authoritative usage across various reputable domains underscores its reliability.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
issues are examined
Focuses on examination rather than a formal investigation.
challenges are analyzed
Highlights a detailed analysis of difficulties.
matters are explored
Suggests a less structured and more exploratory approach.
difficulties are studied
Implies a formal and academic approach to understanding problems.
concerns are reviewed
Emphasizes a process of revisiting and assessing potential problems.
situations are assessed
Focuses on evaluating the overall condition of a set of circumstances.
questions are researched
Highlights the aspect of seeking answers through systematic inquiry.
phenomena are observed
Specifically for when the "problems" can be looked at as events.
anomalies are detected
Emphasizes the identification of irregularities or deviations.
inconsistencies are checked
Focuses on verifying discrepancies or contradictions.
FAQs
How can I use "problems are investigated" in a sentence?
This phrase is typically used in academic, scientific, or formal contexts to describe the systematic examination of issues. For example: "The root causes of the system failures are investigated."
What's a simpler way to say "problems are investigated"?
Alternatives include "issues are examined", "challenges are analyzed", or "matters are explored", depending on the context and level of formality.
Which is correct, "problems are investigated" or "problems are solved"?
"Problems are investigated" refers to the process of examining and understanding issues. "Problems are solved" indicates that the issues have been resolved. They describe different stages in addressing a problem.
What is the difference between "problems are investigated" and "problems are researched"?
"Problems are investigated" suggests a broader inquiry into the nature and causes of issues. "Problems are researched" specifically implies a systematic study to gather information and evidence.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested