# High school math questions and answers

Recent questions in Secondary

### Find the gradient vector field $$\displaystyle\vec{{F}}=\nabla{f}$$ for each of the function $$\displaystyle{f{{\left({x},{y},{z}\right)}}}=\sqrt{{{x}^{{2}}+{y}^{{2}}+{z}^{{2}}}}$$

Tahmid Knox 2020-10-28 Answered

### Use the appropriate Lagrange interpolating polynomials to find the cubic polynomial whose graph passes through the given points. $$\displaystyle{\left({2},\ {1}\right)},\ {\left({3},\ {1}\right)},\ {\left({4},\ −{3}\right)},\ {\left({5},\ {0}\right)}$$.

Daniaal Sanchez 2020-10-28 Answered

### Using Similarity Express x in terms of a, b, and c. Given: The given pair of triangles is similar. The given pair of triangle is,

Falak Kinney 2020-10-28 Answered

### Describe one similarity and one difference between the definitions of $$\displaystyle{\sin{{0}}},{\quad\text{and}\quad}{\cos{{0}}}$$, where 0 is an acute angle of a right triangle.

Tazmin Horton 2020-10-28 Answered

### Which of the series, and which diverge? Give reasons for your answers. (When you check an answer, remember that there may be more than one way to determine the series’ convergence or divergence.) $$\sum_{n=1}^\infty\frac{1}{2n-1}$$

Tazmin Horton 2020-10-28 Answered