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Solution to the test questions of mathematics function in senior one?
f(x)=2^[sinx]+3^[cosx]

x=0 f(x)=4? 4 & gt0+a→a & lt; four

x∈(0,? π) f(x)=2 f(x)>x+a→2 & gt; x+a→a & lt; ? π-2? (x+a is an increasing function, the same below)

x=? π f(x)=3? 3 & gt0+a→a & lt; three

x∈(? π,π] f(x)=4/3? f(x)>x+a→4/3 & gt; x+a→a & lt; 4/3-π

x∈(π,3π/2] f(x)=5/6 f(x)>x+a→5/6 & gt; x+a→a & lt; 5/6- 1.5π

x∈(3π/2,2π) f(x)=3/2 f(x)>x+a→3/2 & gt; x+a→a & lt; 3/2-2π

x=2π f(x)=4? 4 & gt2π+a→a & lt; 4-2π

∫min(4,π-2,3,4/3-π,5/6- 1.5π,3/2-2π,4-2π)=3/2-2π

∴ Inequality holds → A