The phrase "a challenging class" is correct and usable in written English.
You can use it to describe a course or subject that requires significant effort and skill to understand or complete.
Example: "Many students find calculus to be a challenging class, but it is essential for those pursuing a degree in engineering."
Alternatives: "a difficult course" or "a demanding subject".
A challenging class with a fast-flowing pace, Jivamukti utilizes the ashtanga-style, but incorporates chanting, singing readings and meditation.
Try not to worry too much about whether the little buggers will behave; it's unlikely the school will give you a challenging class.
Structural optimization with frequency constraints is a challenging class of optimization problems characterized by highly non-linear and non-convex search spaces.
A challenging class of problems arising in many GPU applications, called batched problems, involves linear algebra operations on many small-sized matrices.
At the next staff meeting – the air rank with eyerolls and passive aggression – a young maths teacher asked for advice on a challenging class, as he was having trouble controlling them.
Because the poses have to be aligned just perfectly for even weight distribution on the boards, you will not only benefit from a challenging class, but you will also be improve your in-studio yoga practice as well.
A particular challenging class of transformations in this respect are the widely used transition metal-catalysed reactions.
Our focus on such a precise, challenging class of epistatic models lends itself to both simulation studies, in which a gold standard for algorithmic evaluation is desirable, and to real world model detection where our characterization of a more mathematically tractable class of epistasis may facilitate the characterization of interaction in an observed biological model.
But if you are a failing student(or even an average B-C student), then allow yourself one year to reform yourself with mere honors courses before moving on to AP. Beware, this is a really challenging class.
These considerations make bio-jet fuels a promising, but challenging, class of biofuels to produce.
Our proposed enhanced sequential limit analysis is formulated as an instance of the challenging class of optimization problems known as a mathematical program with equilibrium constraints (MPEC).
