Evaluate (if possible) the sine, cosine, and tangent of the real number t. (if not possible, enter impossible.)
t = −
π
4

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

To find the extreme values of a function f(x. y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x, y)=xy

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2