How many real roots does the equation $x ^ { 5 } - 7 x + c = 0$ have in the interval $[ - 1,1 ]$ ?
A) at most five real roots
B) no real roots
C) at most one real root
D) at most two real roots
E) at most three real roots

Question

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The Answer of How many real roots does the equation $x ^ { 5 } - 7 x + c = 0$ have in the interval $[ - 1,1 ]$ ?
A) at most five real roots
B) no real roots
C) at most one real root
D) at most two real roots
E) at most three real roots

How Many Real Roots Does the Equation x5−7x+c=0x ^ { 5 } - 7 x + c = 0x5−7x+c=0

How Many Real Roots Does the Equation $x ^ { 5 } - 7 x + c = 0$