If u(x) = f(x) + ig(x) is a complex-valued function of a real variable x and the real and imaginary parts f(x) and g(x) are differentiable functions of x, then the derivative of u is defined to be u'(x) = f '(x) + ig'(x). Use this together with ex + iy = x iy = x(cos(y) + i sin(y)) to prove that if F(x) = erx , then F '(x) = r x when f = a + bi is a complex number.

Aziza has a triangle with two sides measuring 11 in. and 15 in. she claims that the third side can be any length as long as it is greater than 4 in. which statement about aziza’s claim is correct? aziza’s claim is not accurate. the third side must be between 4 in. and 26 in. aziza’s claim is not accurate. the third side can be any length less than 26 in. aziza’s claim is not accurate. the third side can be any length. aziza’s claim is not accurate. the third side must create a scalene triangle.