^tdt

Let f:Rvec 0,1 be a continuous function.Then, which of the following function (s) has (have) the value zero at some point in the interval (0,1)?e^(x)-int_(0)^(x)f(t)sin tdt(b)f(x)+int_(0)^((pi)/(2))f(t)sin tdt(c)x-int_(0)^((pi)/(2)-x)f(t)cos tdt(d)x^(9)-f(x)