We know g（x,t）=t*f(x/t) is perspective function,if f is a convex function,g is also a convex function,or if f is a convex function,g is also a convex function.
Assume f(x)=exp(x),then g(x,t)=t*exp(x/t) ,g(x,t) is a f is a convex function. So how to express this objective function ?

if we write the

cvx_begin

variable x

variable y

minimize x*exp(y/x);

subject to

x>0;

y>0;

y<1

cvx_end

then there is error"Disciplined convex programming error:

Invalid operation: {real affine} / {real affine}",

so how to write it?