There are two basic ways to measure exercise intensity: How you feel. Exercise intensity is a subjective measure of how hard physical activity feels to you while you're doing it â your perceived exertion. Your perceived level of exertion may be different from what someone else feels doing the same exercise.
cus. 1  third-person singular present indicative form of cosir. 2  second-person singular imperative form of cosir.
In the mathematical theory of singularities a cusp is a type of singular point of a curve. Cusps are local singularities in that they are not formed by self intersection points of the curve.The plane curve cusps are all diffeomorphic to one of the following forms: x 2 â y = 0, where k â¥ 1 is an integer. An ordinary cusp is given by x 2 â y 3 = 0, i.e. the zero-level-set of a type A 2 -singularity. 2  Let f (x, y) be a smooth function of x and y and assume, for simplicity, that f (0,0) = 0. 3  Then a type A 2 -singularity of f at (0,0) can be characterised by: